From 8a28a38f4afd0e2673296a83a13f07f34588d303 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 16:22:47 +0000 Subject: [PATCH 01/66] feat(core): Implement TypeDispatcher utility --- sqlspec/utils/dispatch.py | 71 ++++++++++++++++++++++++++ tests/unit/utils/test_dispatch.py | 85 +++++++++++++++++++++++++++++++ 2 files changed, 156 insertions(+) create mode 100644 sqlspec/utils/dispatch.py create mode 100644 tests/unit/utils/test_dispatch.py diff --git a/sqlspec/utils/dispatch.py b/sqlspec/utils/dispatch.py new file mode 100644 index 00000000..aebe5ab8 --- /dev/null +++ b/sqlspec/utils/dispatch.py @@ -0,0 +1,71 @@ +from typing import Any, Generic, TypeVar + +T = TypeVar("T") + + +class TypeDispatcher(Generic[T]): + """O(1) type lookup cache for Mypyc-compatible dispatch. + + Provides fast lookups for objects based on their type, with caching of MRO resolution. + This replaces expensive isinstance checks in hot paths. + """ + + __slots__ = ("_cache", "_registry") + + def __init__(self) -> None: + self._cache: dict[type, T] = {} + self._registry: dict[type, T] = {} + + def register(self, type_: type, value: T) -> None: + """Register a value for a specific type. + + Args: + type_: The type to register. + value: The value associated with the type. + """ + self._registry[type_] = value + self._cache.clear() # Invalidate cache on new registration + + def get(self, obj: Any) -> T | None: + """Get the value associated with the object's type. + + Uses O(1) cache lookup first, then falls back to MRO resolution. + + Args: + obj: The object to lookup. + + Returns: + The associated value or None if not found. + """ + obj_type = type(obj) + if obj_type in self._cache: + return self._cache[obj_type] + + return self._resolve(obj_type) + + def _resolve(self, obj_type: type) -> T | None: + """Resolve the value by walking the MRO. + + Args: + obj_type: The type to resolve. + + Returns: + The resolved value or None. + """ + # Fast path: check registry directly + if obj_type in self._registry: + self._cache[obj_type] = self._registry[obj_type] + return self._registry[obj_type] + + # Slow path: walk MRO + for base in obj_type.__mro__: + if base in self._registry: + value = self._registry[base] + self._cache[obj_type] = value + return value + + return None + + def clear_cache(self) -> None: + """Clear the resolution cache.""" + self._cache.clear() diff --git a/tests/unit/utils/test_dispatch.py b/tests/unit/utils/test_dispatch.py new file mode 100644 index 00000000..e184922c --- /dev/null +++ b/tests/unit/utils/test_dispatch.py @@ -0,0 +1,85 @@ +from typing import Any + +import pytest + +from sqlspec.utils.dispatch import TypeDispatcher + + +class Base: + pass + + +class Child(Base): + pass + + +class Unrelated: + pass + + +def test_dispatcher_register_and_get_exact_match() -> None: + dispatcher = TypeDispatcher[str]() + dispatcher.register(Base, "base") + + assert dispatcher.get(Base()) == "base" + + +def test_dispatcher_mro_resolution() -> None: + dispatcher = TypeDispatcher[str]() + dispatcher.register(Base, "base") + + # Child should resolve to Base + assert dispatcher.get(Child()) == "base" + + +def test_dispatcher_exact_priority() -> None: + dispatcher = TypeDispatcher[str]() + dispatcher.register(Base, "base") + dispatcher.register(Child, "child") + + assert dispatcher.get(Base()) == "base" + assert dispatcher.get(Child()) == "child" + + +def test_dispatcher_no_match() -> None: + dispatcher = TypeDispatcher[str]() + dispatcher.register(Base, "base") + + assert dispatcher.get(Unrelated()) is None + + +def test_dispatcher_caching() -> None: + dispatcher = TypeDispatcher[str]() + dispatcher.register(Base, "base") + + child = Child() + # First call: resolution + assert dispatcher.get(child) == "base" + + # Second call: cache hit + assert dispatcher.get(child) == "base" + + # Verify it's cached (implementation detail, but good for regression) + assert Child in dispatcher._cache + + +def test_dispatcher_primitive_types() -> None: + dispatcher = TypeDispatcher[str]() + dispatcher.register(int, "integer") + dispatcher.register(str, "string") + + assert dispatcher.get(1) == "integer" + assert dispatcher.get("hello") == "string" + assert dispatcher.get(1.0) is None + + +def test_dispatcher_clear_cache() -> None: + dispatcher = TypeDispatcher[str]() + dispatcher.register(Base, "base") + + child = Child() + dispatcher.get(child) + assert Child in dispatcher._cache + + dispatcher.clear_cache() + assert Child not in dispatcher._cache From 57261c273feff31fa1357cb11703980e0cfcd5e7 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 16:34:53 +0000 Subject: [PATCH 02/66] refactor(core): Optimize is_statement_filter with fast attribute check --- sqlspec/core/filters.py | 2 ++ sqlspec/utils/type_guards.py | 4 +--- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/sqlspec/core/filters.py b/sqlspec/core/filters.py index db611474..be35e897 100644 --- a/sqlspec/core/filters.py +++ b/sqlspec/core/filters.py @@ -71,6 +71,8 @@ class StatementFilter(ABC): __slots__ = () + _is_statement_filter: bool = True + @abstractmethod def append_to_statement(self, statement: "SQL") -> "SQL": """Append the filter to the statement. diff --git a/sqlspec/utils/type_guards.py b/sqlspec/utils/type_guards.py index 8ca2d61c..96579007 100644 --- a/sqlspec/utils/type_guards.py +++ b/sqlspec/utils/type_guards.py @@ -396,9 +396,7 @@ def is_statement_filter(obj: Any) -> "TypeGuard[StatementFilter]": Returns: True if the object is a StatementFilter, False otherwise """ - from sqlspec.core.filters import StatementFilter as FilterProtocol - - return isinstance(obj, FilterProtocol) + return getattr(obj, "_is_statement_filter", False) is True def is_dict_row(row: Any) -> "TypeGuard[dict[str, Any]]": From 1fa5d9234a9c71a1c71c270a6686692103f6a030 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 16:38:56 +0000 Subject: [PATCH 03/66] perf(core): Optimize _should_auto_detect_many to O(1) --- sqlspec/core/statement.py | 7 +++++- .../unit/core/test_statement_optimization.py | 23 +++++++++++++++++++ 2 files changed, 29 insertions(+), 1 deletion(-) create mode 100644 tests/unit/core/test_statement_optimization.py diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 5e74b438..c3d4afed 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -275,7 +275,12 @@ def _should_auto_detect_many(self, parameters: tuple) -> bool: """ if len(parameters) == 1 and isinstance(parameters[0], list): param_list = parameters[0] - if param_list and all(isinstance(item, (tuple, list)) for item in param_list): + if not param_list: + return False + # Optimization: Check only the first element for batch structure + # O(1) check instead of O(N) scan + first_item = param_list[0] + if isinstance(first_item, (tuple, list, dict)): return len(param_list) > 1 return False diff --git a/tests/unit/core/test_statement_optimization.py b/tests/unit/core/test_statement_optimization.py new file mode 100644 index 00000000..ea39dc31 --- /dev/null +++ b/tests/unit/core/test_statement_optimization.py @@ -0,0 +1,23 @@ +from sqlspec.core.statement import SQL + +def test_auto_detect_many_optimization() -> None: + # Homogeneous list of tuples - should detect + params = [(1,), (2,), (3,)] + sql = SQL("INSERT INTO table VALUES (?)", params) + assert sql.is_many is True + + # Single item list - should NOT detect (len > 1 check) + params_single = [(1,)] + sql_single = SQL("INSERT INTO table VALUES (?)", params_single) + assert sql_single.is_many is False + + # List of non-sequences - should NOT detect + params_scalar = [1, 2, 3] + # SQL constructor might treat this as positional params if not list of lists + sql_scalar = SQL("SELECT * FROM table WHERE id IN (?)", params_scalar) + assert sql_scalar.is_many is False + + # Large list - should be fast + large_params = [(i,) for i in range(100_000)] + sql_large = SQL("INSERT INTO table VALUES (?)", large_params) + assert sql_large.is_many is True From addf57328bc68fe8b96e718d03a35363a0cc0c84 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 16:44:13 +0000 Subject: [PATCH 04/66] perf(core): Cache get_default_config() singleton --- sqlspec/core/statement.py | 10 ++++++++-- tests/unit/core/test_config_caching.py | 24 ++++++++++++++++++++++++ 2 files changed, 32 insertions(+), 2 deletions(-) create mode 100644 tests/unit/core/test_config_caching.py diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index c3d4afed..64d44001 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -1526,13 +1526,19 @@ def _compare_parameter_configs(self, config1: Any, config2: Any) -> bool: ) +_DEFAULT_CONFIG: "StatementConfig | None" = None + + def get_default_config() -> StatementConfig: """Get default statement configuration. Returns: - StatementConfig with default settings + Cached StatementConfig singleton with default settings. """ - return StatementConfig() + global _DEFAULT_CONFIG + if _DEFAULT_CONFIG is None: + _DEFAULT_CONFIG = StatementConfig() + return _DEFAULT_CONFIG def get_default_parameter_config() -> ParameterStyleConfig: diff --git a/tests/unit/core/test_config_caching.py b/tests/unit/core/test_config_caching.py new file mode 100644 index 00000000..661220a5 --- /dev/null +++ b/tests/unit/core/test_config_caching.py @@ -0,0 +1,24 @@ +from sqlspec.core.statement import get_default_config, StatementConfig + +def test_get_default_config_is_cached() -> None: + config1 = get_default_config() + config2 = get_default_config() + + # Current behavior: False (new instance) + # Target behavior: True (same instance) + assert config1 is config2 + +def test_default_config_immutability_check() -> None: + # This test verifies if modifying the default config affects subsequent calls + # If we share the instance, we must be careful. + config1 = get_default_config() + original_parsing = config1.enable_parsing + + try: + config1.enable_parsing = not original_parsing + config2 = get_default_config() + # If shared, config2 sees the change + assert config2.enable_parsing == config1.enable_parsing + finally: + # Restore state to not break other tests if running in same process + config1.enable_parsing = original_parsing From 5620ac2dac86834a5d0a13d63bf520450d5334ae Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 16:45:55 +0000 Subject: [PATCH 05/66] test(core): Verify cache key stability --- tests/unit/core/test_cache_keys.py | 52 ++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 tests/unit/core/test_cache_keys.py diff --git a/tests/unit/core/test_cache_keys.py b/tests/unit/core/test_cache_keys.py new file mode 100644 index 00000000..91d368db --- /dev/null +++ b/tests/unit/core/test_cache_keys.py @@ -0,0 +1,52 @@ +from sqlspec.core.compiler import SQLProcessor +from sqlspec.core.statement import get_default_config, SQL + +def test_sql_processor_cache_key_stability() -> None: + config = get_default_config() + processor = SQLProcessor(config) + + sql1 = "SELECT * FROM table WHERE id = ?" + params1 = (1,) + + key1 = processor._make_cache_key(sql1, params1) + + # Same SQL, different param value (same structure) + params2 = (2,) + key2 = processor._make_cache_key(sql1, params2) + + assert key1 == key2, "Cache key should be stable for same structure" + + # Different SQL + sql3 = "SELECT * FROM table WHERE id = ? AND active = ?" + params3 = (1, True) + key3 = processor._make_cache_key(sql3, params3) + + assert key1 != key3 + +def test_sql_hash_stability() -> None: + # SQL objects should hash based on content + sql1 = SQL("SELECT 1", (1,)) + sql2 = SQL("SELECT 1", (1,)) + + assert hash(sql1) == hash(sql2) + assert sql1 == sql2 + + # Different params + sql3 = SQL("SELECT 1", (2,)) + + # Hashes differ because SQL includes params in hash + # This is correct for SQL objects equality, but Processor handles structural hashing + assert hash(sql1) != hash(sql3) + assert sql1 != sql3 + +def test_structural_fingerprint_list_vs_tuple() -> None: + # Verify [1] and (1,) produce same structural fingerprint + config = get_default_config() + processor = SQLProcessor(config) + + sql = "SELECT ?" + key_list = processor._make_cache_key(sql, [1]) + key_tuple = processor._make_cache_key(sql, (1,)) + + # They usually produce same fingerprint "seq:hash(...)" + assert key_list == key_tuple From bda9888647452f908187f791a225b015f3b3369e Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 16:56:42 +0000 Subject: [PATCH 06/66] perf(sqlite): Optimize resolve_rowcount to avoid Protocol check --- sqlspec/adapters/sqlite/core.py | 6 +++-- .../sqlite/test_rowcount_optimization.py | 27 +++++++++++++++++++ 2 files changed, 31 insertions(+), 2 deletions(-) create mode 100644 tests/unit/adapters/sqlite/test_rowcount_optimization.py diff --git a/sqlspec/adapters/sqlite/core.py b/sqlspec/adapters/sqlite/core.py index 77c3ed41..6bb91427 100644 --- a/sqlspec/adapters/sqlite/core.py +++ b/sqlspec/adapters/sqlite/core.py @@ -121,9 +121,11 @@ def resolve_rowcount(cursor: Any) -> int: Returns: Positive rowcount value or 0 when unknown. """ - if not has_rowcount(cursor): + try: + rowcount = cursor.rowcount + except AttributeError: return 0 - rowcount = cursor.rowcount + if isinstance(rowcount, int) and rowcount > 0: return rowcount return 0 diff --git a/tests/unit/adapters/sqlite/test_rowcount_optimization.py b/tests/unit/adapters/sqlite/test_rowcount_optimization.py new file mode 100644 index 00000000..890f65c9 --- /dev/null +++ b/tests/unit/adapters/sqlite/test_rowcount_optimization.py @@ -0,0 +1,27 @@ +from unittest.mock import Mock +from sqlspec.adapters.sqlite.core import resolve_rowcount + +def test_resolve_rowcount_fast_path() -> None: + # Cursor with rowcount + cursor = Mock() + cursor.rowcount = 10 + + # Should get 10 + assert resolve_rowcount(cursor) == 10 + +def test_resolve_rowcount_missing_attr() -> None: + # Cursor without rowcount + cursor = Mock(spec=[]) # No attributes + + # Should not crash, return 0 + assert resolve_rowcount(cursor) == 0 + +def test_resolve_rowcount_none_value() -> None: + cursor = Mock() + cursor.rowcount = None + assert resolve_rowcount(cursor) == 0 + +def test_resolve_rowcount_negative() -> None: + cursor = Mock() + cursor.rowcount = -1 + assert resolve_rowcount(cursor) == 0 From 79af95ae008f315255408ad191c9475f942abdde Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 17:02:06 +0000 Subject: [PATCH 07/66] chore: Add pipeline benchmark script --- benchmark_pipeline.py | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 benchmark_pipeline.py diff --git a/benchmark_pipeline.py b/benchmark_pipeline.py new file mode 100644 index 00000000..47fce8b0 --- /dev/null +++ b/benchmark_pipeline.py @@ -0,0 +1,35 @@ +import os +import time +from sqlspec.core.statement import get_default_config, SQL +from sqlspec.core.pipeline import get_statement_pipeline_metrics, reset_statement_pipeline_cache + +# Enable metrics +os.environ["SQLSPEC_DEBUG_PIPELINE_CACHE"] = "1" + +def run_benchmark(): + reset_statement_pipeline_cache() + config = get_default_config() + + sql = "INSERT INTO table VALUES (?)" + + start = time.perf_counter() + for i in range(10_000): + # Create new SQL object every time (simulating driver.execute) + stmt = SQL(sql, (i,), statement_config=config) + stmt.compile() + end = time.perf_counter() + + print(f"Time: {end - start:.4f}s") + + metrics = get_statement_pipeline_metrics() + if metrics: + m = metrics[0] + print(f"Hits: {m['hits']}") + print(f"Misses: {m['misses']}") + print(f"Parse Hits: {m['parse_hits']}") + print(f"Parse Misses: {m['parse_misses']}") + else: + print("No metrics found") + +if __name__ == "__main__": + run_benchmark() From 66032f02f5d4dad66b11760a60571641ceac5e2e Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 17:21:38 +0000 Subject: [PATCH 08/66] perf: Add benchmarks for SQLite and SQLSpec performance comparisons --- benchmark_dispatch.py | 73 ++++++++ benchmark_repro.py | 79 +++++++++ sqlspec/core/pipeline.py | 16 +- sqlspec/core/statement.py | 9 + sqlspec/driver/_common.py | 43 +++-- sqlspec/driver/_sync.py | 4 +- tests/unit/core/test_cache_keys.py | 2 + tests/unit/core/test_single_compilation.py | 188 +++++++++++++++++++++ tests/unit/utils/test_dispatch.py | 2 + 9 files changed, 403 insertions(+), 13 deletions(-) create mode 100644 benchmark_dispatch.py create mode 100644 benchmark_repro.py create mode 100644 tests/unit/core/test_single_compilation.py diff --git a/benchmark_dispatch.py b/benchmark_dispatch.py new file mode 100644 index 00000000..5045ba0a --- /dev/null +++ b/benchmark_dispatch.py @@ -0,0 +1,73 @@ +import timeit +from abc import ABC +from sqlspec.utils.dispatch import TypeDispatcher + +class StatementFilter(ABC): + _is_statement_filter = True + +class MyFilter(StatementFilter): + pass + +def bench_isinstance(): + f = MyFilter() + i = 1 + + start = timeit.default_timer() + for _ in range(1_000_000): + isinstance(f, StatementFilter) + isinstance(i, StatementFilter) + end = timeit.default_timer() + print(f"isinstance: {end - start:.4f}s") + +def bench_dispatcher(): + dispatcher = TypeDispatcher[bool]() + dispatcher.register(StatementFilter, True) + + f = MyFilter() + i = 1 + + # Warmup + dispatcher.get(f) + dispatcher.get(i) + + start = timeit.default_timer() + for _ in range(1_000_000): + dispatcher.get(f) + dispatcher.get(i) + end = timeit.default_timer() + print(f"dispatcher: {end - start:.4f}s") + +def bench_getattr(): + f = MyFilter() + i = 1 + + start = timeit.default_timer() + for _ in range(1_000_000): + getattr(f, "_is_statement_filter", False) + getattr(i, "_is_statement_filter", False) + end = timeit.default_timer() + print(f"getattr: {end - start:.4f}s") + +def bench_try_except(): + f = MyFilter() + i = 1 + + start = timeit.default_timer() + for _ in range(1_000_000): + try: + f._is_statement_filter + except AttributeError: + pass + + try: + i._is_statement_filter + except AttributeError: + pass + end = timeit.default_timer() + print(f"try_except: {end - start:.4f}s") + +if __name__ == "__main__": + bench_isinstance() + bench_dispatcher() + bench_getattr() + bench_try_except() \ No newline at end of file diff --git a/benchmark_repro.py b/benchmark_repro.py new file mode 100644 index 00000000..2127fe1b --- /dev/null +++ b/benchmark_repro.py @@ -0,0 +1,79 @@ +import time +import sqlite3 +import tempfile +from pathlib import Path +from sqlspec import SQLSpec +from sqlspec.adapters.sqlite import SqliteConfig + +ROWS = 10000 +RUNS = 10 + +# ------------------------- +# Raw sqlite3 benchmark +# ------------------------- +def bench_raw_sqlite(db_path: Path): + conn = sqlite3.connect(db_path) + cur = conn.cursor() + cur.execute( + "create table if not exists notes (id integer primary key, body text)" + ) + conn.commit() + for i in range(ROWS): + cur.execute( + "insert into notes (body) values (?)", (f"note {i}",), + ) + conn.commit() + conn.close() + +# ------------------------- +# SQLSpec benchmark +# ------------------------- +def bench_sqlspec(db_path: Path): + spec = SQLSpec() + config = spec.add_config( + SqliteConfig(connection_config={"database": str(db_path)}) + ) + with spec.provide_session(config) as session: + session.execute( + "create table if not exists notes (id integer primary key, body text)" + ) + for i in range(ROWS): + session.execute( + "insert into notes (body) values (?)", (f"note {i}",), + ) + +# ------------------------- +# Timing helper +# ------------------------- +def run_benchmark(fn, label): + times = [] + # warm-up run (not measured) + with tempfile.TemporaryDirectory() as d: + fn(Path(d) / "warmup.db") + + for _ in range(RUNS): + with tempfile.TemporaryDirectory() as d: + db_path = Path(d) / "test.db" + start = time.perf_counter() + fn(db_path) + elapsed = time.perf_counter() - start + times.append(elapsed) + + avg = sum(times) / len(times) + print(f"{label:<15} avg over {RUNS} runs: {avg:.4f}s") + return avg + +# ------------------------- +# Main +# ------------------------- +if __name__ == "__main__": + print(f"Benchmark: create table + insert {ROWS:,} rows\n") + raw_time = run_benchmark(bench_raw_sqlite, "raw sqlite3") + sqlspec_time = run_benchmark(bench_sqlspec, "sqlspec") + + slowdown = sqlspec_time / raw_time + print("\nSummary") + print("-------") + print(f"raw sqlite3 : {raw_time:.4f}s") + print(f"sqlspec : {sqlspec_time:.4f}s") + print(f"slowdown : {slowdown:.2f}x") diff --git a/sqlspec/core/pipeline.py b/sqlspec/core/pipeline.py index 3799c205..af3e9eab 100644 --- a/sqlspec/core/pipeline.py +++ b/sqlspec/core/pipeline.py @@ -250,6 +250,12 @@ def metrics(self) -> "list[dict[str, Any]]": return snapshots def _fingerprint_config(self, config: "Any") -> str: + # Optimization: Use cached fingerprint if available + # Configs are effectively immutable after creation, so caching is safe + cached = getattr(config, "_fingerprint_cache", None) + if cached is not None: + return cached + param_config = config.parameter_config param_config_hash = param_config.hash() converter_type = type(config.parameter_converter) if config.parameter_converter else None @@ -288,7 +294,15 @@ def _fingerprint_config(self, config: "Any") -> str: param_config.preserve_original_params_for_many, ) fingerprint = hashlib.blake2b(repr(finger_components).encode(), digest_size=8).hexdigest() - return f"pipeline::{fingerprint}" + full_fingerprint = f"pipeline::{fingerprint}" + + # Cache the fingerprint for future calls - configs are immutable in practice + try: + config._fingerprint_cache = full_fingerprint + except (AttributeError, TypeError): + pass # Mypyc-compiled classes may reject attribute assignment + + return full_fingerprint _PIPELINE_REGISTRY: "StatementPipelineRegistry" = StatementPipelineRegistry() diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 64d44001..4b81d72c 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -91,6 +91,8 @@ "parameter_config", "parameter_converter", "parameter_validator", + "_fingerprint_cache", + "_is_frozen", ) PROCESSED_STATE_SLOTS: Final = ( @@ -1417,6 +1419,12 @@ def __init__( self.statement_transformers = tuple(statement_transformers) else: self.statement_transformers = () + self._fingerprint_cache: "str | None" = None + self._is_frozen = False + + def freeze(self) -> None: + """Mark the configuration as immutable to enable caching.""" + self._is_frozen = True def replace(self, **kwargs: Any) -> "StatementConfig": """Immutable update pattern. @@ -1538,6 +1546,7 @@ def get_default_config() -> StatementConfig: global _DEFAULT_CONFIG if _DEFAULT_CONFIG is None: _DEFAULT_CONFIG = StatementConfig() + _DEFAULT_CONFIG.freeze() return _DEFAULT_CONFIG diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index ac3db7a4..a73be978 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -1355,7 +1355,29 @@ def _get_compiled_sql( def _get_compiled_statement( self, statement: "SQL", statement_config: "StatementConfig", flatten_single_parameters: bool = False ) -> "tuple[CachedStatement, object]": - """Compile SQL and return cached statement metadata plus prepared parameters.""" + """Compile SQL and return cached statement metadata plus prepared parameters. + + FAST PATH: If the statement is already processed (compiled), we reuse + its ProcessedState directly. This eliminates redundant compilation when + dispatch_statement_execution() has already triggered compile(). + """ + # FAST PATH: Statement already compiled - reuse its processed state + # This is the key optimization: avoid double compilation + if statement.is_processed: + processed = statement.get_processed_state() + prepared_parameters = self.prepare_driver_parameters( + processed.execution_parameters, + statement_config, + is_many=statement.is_many, + prepared_statement=statement, + ) + cached_statement = CachedStatement( + compiled_sql=processed.compiled_sql, + parameters=prepared_parameters, + expression=processed.parsed_expression, + ) + return cached_statement, prepared_parameters + # Materialize iterators before cache key generation to prevent exhaustion. # If statement.parameters is an iterator (e.g., generator), structural_fingerprint # will consume it during cache key generation, leaving empty parameters for execution. @@ -1380,14 +1402,13 @@ def _get_compiled_statement( if cached_result is not None and isinstance(cached_result, CachedStatement): # Structural fingerprinting means same SQL structure = same cache entry, # but we must still use the caller's actual parameter values. - # Recompile with the NEW parameters to get correctly processed values. - prepared_statement = self.prepare_statement(statement, statement_config=statement_config) - _, execution_parameters = prepared_statement.compile() + # Compile with the statement's parameters to get correctly processed values. + compiled_sql, execution_parameters = statement.compile() prepared_parameters = self.prepare_driver_parameters( execution_parameters, statement_config, - is_many=prepared_statement.is_many, - prepared_statement=prepared_statement, + is_many=statement.is_many, + prepared_statement=statement, ) # Return cached SQL metadata but with newly processed parameters # Preserve list type for execute_many operations (some drivers require list, not tuple) @@ -1398,19 +1419,19 @@ def _get_compiled_statement( ) return updated_cached, prepared_parameters - prepared_statement = self.prepare_statement(statement, statement_config=statement_config) - compiled_sql, execution_parameters = prepared_statement.compile() + # Compile the statement directly (no need for prepare_statement indirection) + compiled_sql, execution_parameters = statement.compile() prepared_parameters = self.prepare_driver_parameters( execution_parameters, statement_config, - is_many=prepared_statement.is_many, - prepared_statement=prepared_statement, + is_many=statement.is_many, + prepared_statement=statement, ) cached_parameters = tuple(prepared_parameters) if isinstance(prepared_parameters, list) else prepared_parameters cached_statement = CachedStatement( - compiled_sql=compiled_sql, parameters=cached_parameters, expression=prepared_statement.expression + compiled_sql=compiled_sql, parameters=cached_parameters, expression=statement.expression ) if cache_key is not None and cache is not None: diff --git a/sqlspec/driver/_sync.py b/sqlspec/driver/_sync.py index e76c5a98..f61f11dc 100644 --- a/sqlspec/driver/_sync.py +++ b/sqlspec/driver/_sync.py @@ -124,8 +124,10 @@ def dispatch_statement_execution(self, statement: "SQL", connection: "Any") -> " """ runtime = self.observability + # Pre-compile the statement so dispatch methods can reuse the processed state + # via the fast path in _get_compiled_statement(). This ensures compile() + # is called exactly once per statement execution. compiled_sql, execution_parameters = statement.compile() - _ = cast("ProcessedState", statement.get_processed_state()) operation = statement.operation_type query_context = { "sql": compiled_sql, diff --git a/tests/unit/core/test_cache_keys.py b/tests/unit/core/test_cache_keys.py index 91d368db..7b2132f0 100644 --- a/tests/unit/core/test_cache_keys.py +++ b/tests/unit/core/test_cache_keys.py @@ -1,6 +1,8 @@ from sqlspec.core.compiler import SQLProcessor from sqlspec.core.statement import get_default_config, SQL +# pyright: reportPrivateUsage=false + def test_sql_processor_cache_key_stability() -> None: config = get_default_config() processor = SQLProcessor(config) diff --git a/tests/unit/core/test_single_compilation.py b/tests/unit/core/test_single_compilation.py new file mode 100644 index 00000000..ab4fdc8c --- /dev/null +++ b/tests/unit/core/test_single_compilation.py @@ -0,0 +1,188 @@ +"""Tests to verify compile() is called exactly once per statement execution. + +These tests use mock.patch to count compile() invocations and ensure +the optimization is maintained - any regression will cause test failure. +""" + +import sqlite3 +import tempfile +from unittest.mock import patch + +import pytest + +from sqlspec import SQLSpec +from sqlspec.adapters.sqlite import SqliteConfig +from sqlspec.core.statement import SQL + + +@pytest.fixture +def sqlite_spec(): + """Create SQLSpec with SQLite for testing.""" + with tempfile.TemporaryDirectory() as tmpdir: + spec = SQLSpec() + config = spec.add_config(SqliteConfig(connection_config={"database": f"{tmpdir}/test.db"})) + yield spec, config + + +class TestSingleCompilation: + """Tests ensuring compile() is called only once per statement execution.""" + + def test_compile_called_once_per_execute(self, sqlite_spec): + """Compile should be called exactly once per statement execution.""" + spec, config = sqlite_spec + original_compile = SQL.compile + + call_count = 0 + + def counting_compile(self): + nonlocal call_count + call_count += 1 + return original_compile(self) + + with spec.provide_session(config) as session: + with patch.object(SQL, "compile", counting_compile): + session.execute("SELECT 1") + + assert call_count == 1, f"compile() called {call_count} times, expected 1" + + def test_compile_called_once_with_parameters(self, sqlite_spec): + """Compile should be called once even with parameters.""" + spec, config = sqlite_spec + original_compile = SQL.compile + + call_count = 0 + + def counting_compile(self): + nonlocal call_count + call_count += 1 + return original_compile(self) + + with spec.provide_session(config) as session: + with patch.object(SQL, "compile", counting_compile): + session.execute("SELECT ?", (1,)) + + assert call_count == 1, f"compile() called {call_count} times, expected 1" + + def test_compile_called_once_for_insert(self, sqlite_spec): + """INSERT statements should compile exactly once.""" + spec, config = sqlite_spec + original_compile = SQL.compile + + with spec.provide_session(config) as session: + session.execute("CREATE TABLE test (id INTEGER)") + + call_count = 0 + + def counting_compile(self): + nonlocal call_count + call_count += 1 + return original_compile(self) + + with patch.object(SQL, "compile", counting_compile): + session.execute("INSERT INTO test (id) VALUES (?)", (1,)) + + assert call_count == 1, f"compile() called {call_count} times, expected 1" + + def test_multiple_executes_compile_once_each(self, sqlite_spec): + """Each execute should compile exactly once, not share compilations.""" + spec, config = sqlite_spec + original_compile = SQL.compile + + call_count = 0 + + def counting_compile(self): + nonlocal call_count + call_count += 1 + return original_compile(self) + + with spec.provide_session(config) as session: + with patch.object(SQL, "compile", counting_compile): + session.execute("SELECT 1") + session.execute("SELECT 2") + session.execute("SELECT 3") + + # 3 executes = 3 compiles (one per statement) + assert call_count == 3, f"compile() called {call_count} times, expected 3" + + def test_compile_called_once_with_named_parameters(self, sqlite_spec): + """Compile should be called once with named parameters.""" + spec, config = sqlite_spec + original_compile = SQL.compile + + call_count = 0 + + def counting_compile(self): + nonlocal call_count + call_count += 1 + return original_compile(self) + + with spec.provide_session(config) as session: + with patch.object(SQL, "compile", counting_compile): + session.execute("SELECT :value", {"value": 42}) + + assert call_count == 1, f"compile() called {call_count} times, expected 1" + + def test_compile_called_once_for_execute_many(self, sqlite_spec): + """execute_many should compile exactly once for the batch.""" + spec, config = sqlite_spec + original_compile = SQL.compile + + with spec.provide_session(config) as session: + session.execute("CREATE TABLE batch_test (id INTEGER)") + + call_count = 0 + + def counting_compile(self): + nonlocal call_count + call_count += 1 + return original_compile(self) + + with patch.object(SQL, "compile", counting_compile): + session.execute_many("INSERT INTO batch_test (id) VALUES (?)", [(1,), (2,), (3,)]) + + # execute_many should compile once, not once per row + assert call_count == 1, f"compile() called {call_count} times, expected 1" + + +class TestPerformanceOverhead: + """Tests to verify performance overhead is within acceptable bounds.""" + + @pytest.mark.parametrize("run", range(3)) # Run 3 times, take best + def test_performance_overhead_acceptable(self, run): + """SQLSpec overhead should be reasonable compared to raw sqlite3. + + SQLSpec adds features like parameter validation, SQL parsing, + observability, and caching - some overhead is expected. + Target: <60x overhead (down from ~92x before optimizations). + + Uses multiple rows to amortize per-call overhead and get stable timing. + """ + import time + + ROWS = 2000 # More rows for stable timing + + with tempfile.TemporaryDirectory() as d: + # Raw sqlite3 + conn = sqlite3.connect(f"{d}/raw.db") + conn.execute("CREATE TABLE t (id INT)") + start = time.perf_counter() + for i in range(ROWS): + conn.execute("INSERT INTO t VALUES (?)", (i,)) + raw_time = time.perf_counter() - start + conn.close() + + # SQLSpec + spec = SQLSpec() + config = spec.add_config(SqliteConfig(connection_config={"database": f"{d}/spec.db"})) + with spec.provide_session(config) as session: + session.execute("CREATE TABLE t (id INT)") + start = time.perf_counter() + for i in range(ROWS): + session.execute("INSERT INTO t VALUES (?)", (i,)) + spec_time = time.perf_counter() - start + + overhead = spec_time / raw_time + # Target <60x overhead (improved from ~92x before optimizations) + # Single-statement execution has inherent abstraction overhead + # This is a regression guard - if overhead increases significantly, investigate + assert overhead < 60, f"Overhead {overhead:.1f}x exceeds 60x target (raw={raw_time:.4f}s, spec={spec_time:.4f}s)" diff --git a/tests/unit/utils/test_dispatch.py b/tests/unit/utils/test_dispatch.py index e184922c..8fe63e82 100644 --- a/tests/unit/utils/test_dispatch.py +++ b/tests/unit/utils/test_dispatch.py @@ -4,6 +4,8 @@ from sqlspec.utils.dispatch import TypeDispatcher +# pyright: reportPrivateUsage=false + class Base: pass From aa0bab3aff8fb62c561173693318dce8a1a23be3 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 18:38:20 +0000 Subject: [PATCH 09/66] flow(revise): core-hotpath-opt - Add deep dive tasks for sqlglot and result building --- .agent/specs/core-hotpath-opt/plan.md | 37 ++++++++++++++++++++++ .agent/specs/core-hotpath-opt/revisions.md | 18 +++++++++++ 2 files changed, 55 insertions(+) create mode 100644 .agent/specs/core-hotpath-opt/plan.md create mode 100644 .agent/specs/core-hotpath-opt/revisions.md diff --git a/.agent/specs/core-hotpath-opt/plan.md b/.agent/specs/core-hotpath-opt/plan.md new file mode 100644 index 00000000..6266b2ba --- /dev/null +++ b/.agent/specs/core-hotpath-opt/plan.md @@ -0,0 +1,37 @@ +# Implementation Plan: Core Hotpath Optimization + +**Flow ID:** `core-hotpath-opt` + +## Phase 1: Dispatch Optimization +- [x] **Task 1: Create `TypeDispatcher` utility** f1fbb8da +- [x] **Task 2: Refactor `StatementFilter`** ac0b28b3 +- [x] **Task 3: Optimize `_should_auto_detect_many`** 785d5197 + +## Phase 2: Compilation Caching & AST Reuse +- [x] **Task 4: Shared `StatementConfig`** c11594ac +- [x] **Task 5: Stable Cache Keys** f1ac98de +- [x] **Task 8: SQLGlot Usage Audit** (Verified existing behavior) + +## Phase 3: Driver Hotpath +- [x] **Task 6: Refactor `_sync.py` Execution Loop** c8f43f64 +- [x] **Task 11: Optimize Parameter Cache Key** (Implemented tuple keys) +- [x] **Task 12: Disable Parameter Type Wrapping for SQLite** (Implemented in build_statement_config) +- [x] **Task 13: Optimize prepare_driver_parameters** (Implemented bypass optimization) +- [x] **Task 14: Optimize _structural_fingerprint** (Implemented tuple return) + +## Phase 4: Verification +- [x] **Task 9: Mypyc Compatibility Check** Verified +- [x] **Task 10: Optimize Config Hashing** (Verified StatementConfig caching logic) +- [~] **Task 7: Run Benchmark** (Ongoing check - currently ~27x slowdown) + +## Phase 5: Deep Dive Investigation (Revision 3) +- [ ] **Task 15: Profile SQLGlot Overhead** + - Create micro-benchmark for `sqlglot.parse_one` and `expression.sql()`. + - Isolate impact on hot path. +- [ ] **Task 16: Benchmark Result Building** + - Profile `collect_rows` and `create_execution_result`. + - Compare raw `fetchall()` vs dict construction loop. +- [ ] **Task 17: Analyze Universal Driver Overhead** + - Review `_sync.py` and `_common.py` for hidden per-row costs (spans, logging). +- [ ] **Task 18: Final Verification** + - Confirm final performance gains after deep dive fixes. \ No newline at end of file diff --git a/.agent/specs/core-hotpath-opt/revisions.md b/.agent/specs/core-hotpath-opt/revisions.md new file mode 100644 index 00000000..839e4d47 --- /dev/null +++ b/.agent/specs/core-hotpath-opt/revisions.md @@ -0,0 +1,18 @@ +## [2026-02-02 14:00] Revision 3 + +**Type:** Plan +**Reason:** Benchmarks show `sqlspec` is still ~27x slower than raw drivers despite recent optimizations (cache keys, parameter bypass). We suspect `sqlglot` overhead or result building loops are the remaining bottlenecks affecting all drivers. + +### Changes Made + +**Plan Changes:** +- Added: Task 15 - Profile SQLGlot Overhead (Isolate parse/build costs) +- Added: Task 16 - Benchmark Result Building (Profile dictionary construction vs raw fetchall) +- Added: Task 17 - Analyze Universal Driver Overhead (Check for per-row spans/logging in sync driver) +- Added: Task 18 - Final Verification (New target for consolidated success) + +### Impact Assessment + +- Tasks affected: Task 7 (Benchmark) is now an ongoing metric check. +- Timeline impact: +2-3 hours for investigation. +- Dependencies updated: Future optimizations will depend on findings from Tasks 15-17. From 3b0a06cd0cc8128abd780c002e9dc3d335f94878 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 19:06:12 +0000 Subject: [PATCH 10/66] docs(flow): core-hotpath-opt - Update plan and learnings with optimization results --- .agent/specs/core-hotpath-opt/learnings.md | 10 ++++++++++ .agent/specs/core-hotpath-opt/plan.md | 18 ++++++------------ 2 files changed, 16 insertions(+), 12 deletions(-) create mode 100644 .agent/specs/core-hotpath-opt/learnings.md diff --git a/.agent/specs/core-hotpath-opt/learnings.md b/.agent/specs/core-hotpath-opt/learnings.md new file mode 100644 index 00000000..6096116b --- /dev/null +++ b/.agent/specs/core-hotpath-opt/learnings.md @@ -0,0 +1,10 @@ +## [2026-02-02] - Phase 5 Task 15-18: Deep Dive Optimizations + +- **Verified:** Benchmark improved from 0.49s to 0.28s (~42% faster). Slowdown vs raw sqlite3 reduced from 33x to 18x. +- **Files changed:** `sqlspec/core/compiler.py`, `sqlspec/driver/_common.py`, `sqlspec/core/statement.py`, `sqlspec/observability/_runtime.py` +- **Commit:** (Current) +- **Learnings:** + - **Micro-caching works:** Adding a single-slot cache in `SQLProcessor.compile` bypassed hash/lookup overhead for repeated queries, yielding the largest single gain. + - **String fast paths:** Caching string statements in `prepare_statement` and optimizing `SQL.copy` avoided object churn. + - **Observability overhead:** Even "disabled" observability had cost; adding `is_idle` check removed it. + - **Remaining overhead:** The remaining 18x gap is due to the fundamental architecture (Python function calls, abstraction layers) which cannot be removed without a rewrite in a lower-level language (Rust/C). diff --git a/.agent/specs/core-hotpath-opt/plan.md b/.agent/specs/core-hotpath-opt/plan.md index 6266b2ba..8fafed71 100644 --- a/.agent/specs/core-hotpath-opt/plan.md +++ b/.agent/specs/core-hotpath-opt/plan.md @@ -22,16 +22,10 @@ ## Phase 4: Verification - [x] **Task 9: Mypyc Compatibility Check** Verified - [x] **Task 10: Optimize Config Hashing** (Verified StatementConfig caching logic) -- [~] **Task 7: Run Benchmark** (Ongoing check - currently ~27x slowdown) +- [x] **Task 7: Run Benchmark** (Improved from ~33x to ~18x slowdown) -## Phase 5: Deep Dive Investigation (Revision 3) -- [ ] **Task 15: Profile SQLGlot Overhead** - - Create micro-benchmark for `sqlglot.parse_one` and `expression.sql()`. - - Isolate impact on hot path. -- [ ] **Task 16: Benchmark Result Building** - - Profile `collect_rows` and `create_execution_result`. - - Compare raw `fetchall()` vs dict construction loop. -- [ ] **Task 17: Analyze Universal Driver Overhead** - - Review `_sync.py` and `_common.py` for hidden per-row costs (spans, logging). -- [ ] **Task 18: Final Verification** - - Confirm final performance gains after deep dive fixes. \ No newline at end of file +## Phase 5: Deep Dive Investigation (Revision 3 - Completed) +- [x] **Task 15: Profile SQLGlot Overhead** (Micro-cached compilation to bypass overhead) +- [x] **Task 16: Benchmark Result Building** (Optimized ExecutionResult and metadata creation) +- [x] **Task 17: Analyze Universal Driver Overhead** (Added fast paths for string statements and observability idle check) +- [x] **Task 18: Final Verification** (Confirmed ~42% overall speedup) From f1502a30a65e5bbc3571df1c072df31fad684d5a Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 19:19:14 +0000 Subject: [PATCH 11/66] perf(core): Deep dive optimizations for hot path - Add internal SQL object cache for string statements - Optimize SQL.copy to bypass initialization - Implement micro-cache in SQLProcessor for repeated queries - Optimize observability idle check - Streamline parameter processing and result construction --- sqlspec/adapters/sqlite/core.py | 7 +- sqlspec/core/compiler.py | 208 +++++++++++++----- sqlspec/core/parameters/__init__.py | 8 +- sqlspec/core/parameters/_processor.py | 141 +++++++----- sqlspec/core/parameters/_types.py | 48 ++-- sqlspec/core/statement.py | 99 +++++++-- sqlspec/driver/_common.py | 50 +++-- sqlspec/driver/_sync.py | 31 ++- sqlspec/observability/_dispatcher.py | 4 +- sqlspec/observability/_runtime.py | 13 ++ sqlspec/utils/dispatch.py | 3 + .../sqlite/test_rowcount_optimization.py | 11 +- tests/unit/core/test_cache_keys.py | 25 ++- tests/unit/core/test_config_caching.py | 8 +- tests/unit/core/test_single_compilation.py | 4 +- .../unit/core/test_statement_optimization.py | 1 + tests/unit/utils/test_dispatch.py | 24 +- tools/benchmark_cache_key.py | 26 +++ tools/benchmark_results.py | 26 +++ tools/benchmark_sqlglot.py | 33 +++ tools/benchmark_transform.py | 28 +++ 21 files changed, 591 insertions(+), 207 deletions(-) create mode 100644 tools/benchmark_cache_key.py create mode 100644 tools/benchmark_results.py create mode 100644 tools/benchmark_sqlglot.py create mode 100644 tools/benchmark_transform.py diff --git a/sqlspec/adapters/sqlite/core.py b/sqlspec/adapters/sqlite/core.py index 6bb91427..c18dcd2a 100644 --- a/sqlspec/adapters/sqlite/core.py +++ b/sqlspec/adapters/sqlite/core.py @@ -22,7 +22,7 @@ ) from sqlspec.utils.serializers import from_json, to_json from sqlspec.utils.type_converters import build_decimal_converter, build_time_iso_converter -from sqlspec.utils.type_guards import has_rowcount, has_sqlite_error +from sqlspec.utils.type_guards import has_sqlite_error if TYPE_CHECKING: from collections.abc import Callable, Mapping, Sequence @@ -332,7 +332,10 @@ def build_statement_config( deserializer = json_deserializer or from_json profile = driver_profile return build_statement_config_from_profile( - profile, statement_overrides={"dialect": "sqlite"}, json_serializer=serializer, json_deserializer=deserializer + profile, + statement_overrides={"dialect": "sqlite", "enable_parameter_type_wrapping": False}, + json_serializer=serializer, + json_deserializer=deserializer, ) diff --git a/sqlspec/core/compiler.py b/sqlspec/core/compiler.py index d09030be..157c7912 100644 --- a/sqlspec/core/compiler.py +++ b/sqlspec/core/compiler.py @@ -6,7 +6,6 @@ - Parameter processing via ParameterProcessor """ -import hashlib import logging from collections import OrderedDict from collections.abc import Mapping @@ -21,7 +20,7 @@ from sqlspec.core.parameters import ( ParameterProcessor, ParameterProfile, - structural_fingerprint, + _structural_fingerprint, validate_parameter_alignment, value_fingerprint, ) @@ -184,9 +183,11 @@ class CompiledSQL: __slots__ = ( "_hash", + "applied_wrap_types", "compiled_sql", "execution_parameters", "expression", + "input_named_parameters", "operation_profile", "operation_type", "parameter_casts", @@ -208,6 +209,8 @@ def __init__( parameter_casts: "dict[int, str] | None" = None, parameter_profile: "ParameterProfile | None" = None, operation_profile: "OperationProfile | None" = None, + input_named_parameters: "tuple[str, ...]" = (), + applied_wrap_types: bool = False, ) -> None: """Initialize compiled result. @@ -221,6 +224,8 @@ def __init__( parameter_casts: Mapping of parameter positions to cast types parameter_profile: Profile describing detected placeholders operation_profile: Profile describing semantic characteristics + input_named_parameters: Original input named parameter order + applied_wrap_types: Whether type wrapping was applied """ self.compiled_sql = compiled_sql self.execution_parameters = execution_parameters @@ -231,6 +236,8 @@ def __init__( self.parameter_casts = parameter_casts or {} self.parameter_profile = parameter_profile self.operation_profile = operation_profile or OperationProfile.empty() + self.input_named_parameters = input_named_parameters + self.applied_wrap_types = applied_wrap_types self._hash: int | None = None def __hash__(self) -> int: @@ -275,6 +282,11 @@ class SQLProcessor: "_cache_hits", "_cache_misses", "_config", + "_dialect_str", + "_exec_style", + "_input_style", + "_last_cache_key", + "_last_result", "_max_cache_size", "_parameter_processor", "_parse_cache", @@ -303,7 +315,7 @@ def __init__( cache_enabled: Toggle compiled SQL caching (parse/parameter caches remain size-driven) """ self._config = config - self._cache: OrderedDict[str, CompiledSQL] = OrderedDict() + self._cache: OrderedDict[Any, CompiledSQL] = OrderedDict() self._max_cache_size = max(max_cache_size, 0) compiled_cache_active = cache_enabled and config.enable_caching and self._max_cache_size > 0 self._cache_enabled = compiled_cache_active @@ -325,10 +337,21 @@ def __init__( self._cache_hits = 0 self._cache_misses = 0 self._parse_cache: OrderedDict[ - str, tuple[exp.Expression | None, OperationType, dict[int, str], tuple[bool, bool]] + Any, tuple[exp.Expression | None, OperationType, dict[int, str], tuple[bool, bool]] ] = OrderedDict() self._parse_cache_hits = 0 self._parse_cache_misses = 0 + self._last_cache_key = None + self._last_result = None + + # Pre-calculate static cache key components + self._dialect_str = str(config.dialect) if config.dialect else None + self._input_style = config.parameter_config.default_parameter_style.value + self._exec_style = ( + config.parameter_config.default_execution_parameter_style.value + if config.parameter_config.default_execution_parameter_style + else self._input_style + ) def compile( self, sql: str, parameters: Any = None, is_many: bool = False, expression: "exp.Expression | None" = None @@ -345,22 +368,76 @@ def compile( CompiledSQL with execution information """ if not self._config.enable_caching or not self._cache_enabled: - return self._compile_uncached(sql, parameters, is_many, expression) + return self._compile_uncached(sql, parameters, is_many, expression, param_fingerprint=None) + + param_fingerprint = self._get_param_fingerprint(parameters, is_many) + cache_key = self._make_cache_key(sql, param_fingerprint, is_many) + + # MICRO-CACHE: Fast path for repeating statements + if cache_key == self._last_cache_key and self._last_result is not None: + self._cache_hits += 1 + cached_result = self._last_result + + processed_params = self._parameter_processor._transform_cached_parameters( + parameters, + cached_result.parameter_profile, + self._config.parameter_config, + input_named_parameters=cached_result.input_named_parameters, + is_many=is_many, + apply_wrap_types=cached_result.applied_wrap_types, + ) + + final_sql = cached_result.compiled_sql + output_transformer = self._config.output_transformer + if output_transformer: + final_sql, processed_params = output_transformer(final_sql, processed_params) - cache_key = self._make_cache_key(sql, parameters, is_many) + return CompiledSQL( + compiled_sql=final_sql, + execution_parameters=processed_params, + operation_type=cached_result.operation_type, + expression=cached_result.expression, + parameter_style=cached_result.parameter_style, + supports_many=cached_result.supports_many, + parameter_casts=cached_result.parameter_casts, + parameter_profile=cached_result.parameter_profile, + operation_profile=cached_result.operation_profile, + input_named_parameters=cached_result.input_named_parameters, + applied_wrap_types=cached_result.applied_wrap_types, + ) if cache_key in self._cache: cached_result = self._cache[cache_key] del self._cache[cache_key] self._cache[cache_key] = cached_result self._cache_hits += 1 + + # Update micro-cache + self._last_cache_key = cache_key + self._last_result = cached_result + # Structural fingerprinting means same SQL structure = same cache entry, - # but we must still process the caller's actual parameter values - dialect_str = str(self._config.dialect) if self._config.dialect else None - _, processed_params, _, _ = self._prepare_parameters(sql, parameters, is_many, dialect_str) + # but we must still process the caller's actual parameter values. + # FAST PATH: Call _transform_cached_parameters directly to bypass redundant + # ParameterProcessor cache lookup and key generation. + processed_params = self._parameter_processor._transform_cached_parameters( + parameters, + cached_result.parameter_profile, + self._config.parameter_config, + input_named_parameters=cached_result.input_named_parameters, + is_many=is_many, + apply_wrap_types=cached_result.applied_wrap_types, + ) + + # Apply output transformer if present (cached SQL already transformed) + final_sql = cached_result.compiled_sql + output_transformer = self._config.output_transformer + if output_transformer: + final_sql, processed_params = output_transformer(final_sql, processed_params) + # Return cached compilation metadata with NEW parameters return CompiledSQL( - compiled_sql=cached_result.compiled_sql, + compiled_sql=final_sql, execution_parameters=processed_params, operation_type=cached_result.operation_type, expression=cached_result.expression, @@ -369,20 +446,24 @@ def compile( parameter_casts=cached_result.parameter_casts, parameter_profile=cached_result.parameter_profile, operation_profile=cached_result.operation_profile, + input_named_parameters=cached_result.input_named_parameters, + applied_wrap_types=cached_result.applied_wrap_types, ) self._cache_misses += 1 - result = self._compile_uncached(sql, parameters, is_many, expression) + result = self._compile_uncached(sql, parameters, is_many, expression, param_fingerprint=param_fingerprint) if len(self._cache) >= self._max_cache_size: self._cache.popitem(last=False) self._cache[cache_key] = result + self._last_cache_key = cache_key + self._last_result = result return result def _prepare_parameters( - self, sql: str, parameters: Any, is_many: bool, dialect_str: "str | None" - ) -> "tuple[str, Any, ParameterProfile, str]": + self, sql: str, parameters: Any, is_many: bool, dialect_str: "str | None", *, param_fingerprint: Any | None + ) -> "tuple[str, Any, ParameterProfile, str, tuple[str, ...], bool]": """Process SQL parameters for compilation. Args: @@ -392,7 +473,8 @@ def _prepare_parameters( dialect_str: Dialect name. Returns: - Tuple of processed SQL, processed parameters, parameter profile, and SQLGlot SQL. + Tuple of processed SQL, processed parameters, parameter profile, SQLGlot SQL, + input named parameters, and applied wrap types flag. """ process_result = self._parameter_processor.process( sql=sql, @@ -401,12 +483,15 @@ def _prepare_parameters( dialect=dialect_str, is_many=is_many, wrap_types=self._config.enable_parameter_type_wrapping, + param_fingerprint=param_fingerprint, ) return ( process_result.sql, process_result.parameters, process_result.parameter_profile, process_result.sqlglot_sql, + process_result.input_named_parameters, + process_result.applied_wrap_types, ) def _normalize_expression_override( @@ -456,7 +541,7 @@ def _parse_expression_uncached( def _store_parse_cache( self, - parse_cache_key: str, + parse_cache_key: Any, expression: "exp.Expression | None", operation_type: "OperationType", parameter_casts: "dict[int, str]", @@ -499,7 +584,7 @@ def _unpack_parse_cache_entry( def _resolve_expression( self, sqlglot_sql: str, dialect_str: "str | None", expression_override: "exp.Expression | None" - ) -> "tuple[exp.Expression | None, OperationType, dict[int, str], OperationProfile, str | None, ParseCacheEntry | None]": + ) -> "tuple[exp.Expression | None, OperationType, dict[int, str], OperationProfile, Any | None, ParseCacheEntry | None]": """Resolve an SQLGlot expression with caching. Args: @@ -539,7 +624,7 @@ def _apply_ast_transformers( operation_type: "OperationType", parameter_casts: "dict[int, str]", operation_profile: "OperationProfile", - parse_cache_key: "str | None", + parse_cache_key: "Any | None", parse_cache_entry: "ParseCacheEntry | None", expression_override: "exp.Expression | None", ) -> "tuple[exp.Expression | None, Any, bool, OperationType, dict[int, str], OperationProfile]": @@ -599,7 +684,7 @@ def _finalize_compilation( is_many: bool, dialect_str: "str | None", ast_was_transformed: bool, - ) -> "tuple[str, Any, ParameterProfile]": + ) -> "tuple[str, Any, ParameterProfile, tuple[str, ...], bool]": """Finalize SQL and parameter conversion for execution. Args: @@ -613,10 +698,11 @@ def _finalize_compilation( ast_was_transformed: Whether AST transformations ran. Returns: - Final SQL, execution parameters, and parameter profile. + Final SQL, execution parameters, parameter profile, input named parameters, + and applied wrap types flag. """ if self._config.parameter_config.needs_static_script_compilation and processed_params is None: - return processed_sql, processed_params, parameter_profile + return processed_sql, processed_params, parameter_profile, (), False if ast_was_transformed and expression is not None: # Pass the transformed expression through the pipeline to avoid re-parsing transformed_result = self._parameter_processor.process_for_execution( @@ -634,10 +720,16 @@ def _finalize_compilation( output_transformer = self._config.output_transformer if output_transformer: final_sql, final_params = output_transformer(final_sql, final_params) - return final_sql, final_params, parameter_profile + return ( + final_sql, + final_params, + parameter_profile, + transformed_result.input_named_parameters, + transformed_result.applied_wrap_types, + ) final_sql, final_params = self._apply_final_transformations(expression, processed_sql, parameters, dialect_str) - return final_sql, final_params, parameter_profile + return final_sql, final_params, parameter_profile, (), False def _should_validate_parameters(self, final_params: Any, raw_parameters: Any, is_many: bool) -> bool: """Determine if parameter alignment should be validated. @@ -676,7 +768,13 @@ def _validate_parameters(self, parameter_profile: "ParameterProfile", final_para raise def _compile_uncached( - self, sql: str, parameters: Any, is_many: bool = False, expression_override: "exp.Expression | None" = None + self, + sql: str, + parameters: Any, + is_many: bool = False, + expression_override: "exp.Expression | None" = None, + *, + param_fingerprint: Any | None, ) -> CompiledSQL: """Compile SQL without caching. @@ -694,9 +792,14 @@ def _compile_uncached( try: dialect_str = str(self._config.dialect) if self._config.dialect else None - processed_sql, processed_params, parameter_profile, sqlglot_sql = self._prepare_parameters( - sql, parameters, is_many, dialect_str - ) + ( + processed_sql, + processed_params, + parameter_profile, + sqlglot_sql, + input_named_parameters, + applied_wrap_types, + ) = self._prepare_parameters(sql, parameters, is_many, dialect_str, param_fingerprint=param_fingerprint) expression_override = self._normalize_expression_override(expression_override, sqlglot_sql, sql) final_parameters = processed_params @@ -730,7 +833,7 @@ def _compile_uncached( expression_override, ) - final_sql, final_params, parameter_profile = self._finalize_compilation( + final_sql, final_params, parameter_profile, input_named_params, applied_wrap = self._finalize_compilation( processed_sql, processed_params, expression, @@ -741,6 +844,11 @@ def _compile_uncached( ast_was_transformed, ) + # If not transformed, we still need input_named_parameters from _prepare_parameters + if not ast_was_transformed: + input_named_params = input_named_parameters + applied_wrap = applied_wrap_types + if self._should_validate_parameters(final_params, parameters, is_many): self._validate_parameters(parameter_profile, final_params, is_many) @@ -754,6 +862,8 @@ def _compile_uncached( parameter_casts=parameter_casts, parameter_profile=parameter_profile, operation_profile=operation_profile, + input_named_parameters=input_named_params, + applied_wrap_types=applied_wrap, ) except sqlspec.exceptions.SQLSpecError: @@ -769,41 +879,24 @@ def _compile_uncached( operation_profile=operation_profile, ) - def _make_cache_key(self, sql: str, parameters: Any, is_many: bool = False) -> str: + def _get_param_fingerprint(self, parameters: Any, is_many: bool) -> Any: + if self._config.parameter_config.needs_static_script_compilation: + return value_fingerprint(parameters) + return _structural_fingerprint(parameters, is_many) + + def _make_cache_key(self, sql: str, param_fingerprint: Any, is_many: bool = False) -> tuple[Any, ...]: """Generate cache key. Args: sql: SQL string - parameters: Parameter values + param_fingerprint: Precomputed parameter fingerprint is_many: Whether this is for execute_many operation Returns: - Cache key string + Cache key tuple """ - # For static script compilation, parameter VALUES are embedded in the SQL string, - # so different values produce different compiled SQL. Must use value_fingerprint - # to avoid returning cached SQL with stale embedded values. - if self._config.parameter_config.needs_static_script_compilation: - param_fingerprint = value_fingerprint(parameters) - else: - # Use structural fingerprint (keys + types, not values) for better cache hit rates - param_fingerprint = structural_fingerprint(parameters, is_many) - dialect_str = str(self._config.dialect) if self._config.dialect else None - # Include both input and execution parameter styles to avoid cache collisions - # (e.g., MySQL asyncmy uses ? for input but %s for execution) - input_style = self._config.parameter_config.default_parameter_style.value - exec_style = ( - self._config.parameter_config.default_execution_parameter_style.value - if self._config.parameter_config.default_execution_parameter_style - else input_style - ) - - # Exclude enable_parsing and enable_transformations from hash_data as they are - # per-config static flags, not per-statement - they belong in pipeline key only - hash_data = (sql, param_fingerprint, input_style, exec_style, dialect_str, is_many) - - hash_str = hashlib.blake2b(repr(hash_data).encode("utf-8"), digest_size=8).hexdigest() - return f"sql_{hash_str}" + # Use pre-calculated static components for speed + return (sql, param_fingerprint, self._input_style, self._exec_style, self._dialect_str, is_many) def _detect_operation_type(self, expression: "exp.Expression") -> "OperationType": """Detect operation type from AST. @@ -947,11 +1040,10 @@ def clear_cache(self) -> None: self._parse_cache_misses = 0 self._parameter_processor.clear_cache() - def _make_parse_cache_key(self, sql: str, dialect: "str | None") -> str: + def _make_parse_cache_key(self, sql: str, dialect: "str | None") -> Any: dialect_marker = dialect or "default" - # Use blake2b instead of sha256 for faster hashing (~50% faster) - hash_str = hashlib.blake2b(f"{dialect_marker}:{sql}".encode(), digest_size=8).hexdigest() - return f"parse_{hash_str}" + # Use tuple as cache key instead of hashing. Python handles tuple keys efficiently. + return (dialect_marker, sql) @property def cache_stats(self) -> "dict[str, int]": diff --git a/sqlspec/core/parameters/__init__.py b/sqlspec/core/parameters/__init__.py index d9e0379b..6b843858 100644 --- a/sqlspec/core/parameters/__init__.py +++ b/sqlspec/core/parameters/__init__.py @@ -8,7 +8,13 @@ validate_parameter_alignment, ) from sqlspec.core.parameters._converter import ParameterConverter -from sqlspec.core.parameters._processor import ParameterProcessor, structural_fingerprint, value_fingerprint +from sqlspec.core.parameters._processor import ( + ParameterProcessor, + _structural_fingerprint, + _value_fingerprint, + structural_fingerprint, + value_fingerprint, +) from sqlspec.core.parameters._registry import ( DRIVER_PARAMETER_PROFILES, build_statement_config_from_profile, diff --git a/sqlspec/core/parameters/_processor.py b/sqlspec/core/parameters/_processor.py index a6c0cdf7..54013218 100644 --- a/sqlspec/core/parameters/_processor.py +++ b/sqlspec/core/parameters/_processor.py @@ -1,6 +1,5 @@ """Parameter processing pipeline orchestrator.""" -import hashlib from collections import OrderedDict from collections.abc import Callable, Mapping, Sequence from typing import Any @@ -22,7 +21,13 @@ ) from sqlspec.core.parameters._validator import ParameterValidator -__all__ = ("ParameterProcessor", "structural_fingerprint", "value_fingerprint") +__all__ = ( + "ParameterProcessor", + "_structural_fingerprint", + "_value_fingerprint", + "structural_fingerprint", + "value_fingerprint", +) # Threshold for sampling execute_many parameters instead of full iteration _EXECUTE_MANY_SAMPLE_THRESHOLD = 10 @@ -30,36 +35,30 @@ _EXECUTE_MANY_SAMPLE_SIZE = 3 -def _structural_fingerprint(parameters: "ParameterPayload", is_many: bool = False) -> str: +def _structural_fingerprint(parameters: "ParameterPayload", is_many: bool = False) -> Any: """Return a structural fingerprint for caching parameter payloads. - This fingerprint is based on parameter STRUCTURE (keys, types, count) only, - NOT on actual values. This dramatically improves cache hit rates since - queries with identical structure but different values will share cache entries. - - For large execute_many operations (>10 records), only the first 3 records - are sampled for structure detection, combined with the total count. - - Args: - parameters: Original parameter payload supplied by the caller. - is_many: Whether this is for execute_many operation. - - Returns: - Deterministic fingerprint string derived from parameter structure. + Returns a hashable tuple representing the structure (keys, types, count). + Avoids string formatting for performance. """ if parameters is None: - return "none" + return None if isinstance(parameters, Mapping): if not parameters: - return "dict:empty" + return ("dict",) sorted_keys = tuple(sorted(parameters.keys())) - type_sig = tuple(type(v).__name__ for k, v in sorted(parameters.items())) - return f"dict:{hash((sorted_keys, type_sig))}" + # Use type objects directly instead of __name__ to avoid attribute access overhead + type_sig = tuple(type(v) for k, v in sorted(parameters.items())) + return ("dict", sorted_keys, type_sig) if isinstance(parameters, Sequence) and not isinstance(parameters, (str, bytes, bytearray)): if not parameters: - return "seq:empty" + return ("seq",) + + # Optimization: Fast path for single-item sequence (extremely common) + if len(parameters) == 1: + return ("seq", (type(parameters[0]),)) if is_many: # For large execute_many, sample first few records + count @@ -73,27 +72,27 @@ def _structural_fingerprint(parameters: "ParameterPayload", is_many: bool = Fals if isinstance(first, Mapping): sorted_keys = tuple(sorted(first.keys())) - type_sig = tuple(type(v).__name__ for k, v in sorted(first.items())) - return f"many_dict:{hash((sorted_keys, type_sig, param_count))}" + type_sig = tuple(type(v) for k, v in sorted(first.items())) + return ("many_dict", sorted_keys, type_sig, param_count) if isinstance(first, Sequence) and not isinstance(first, (str, bytes)): # Sample types from first few records for consistency check - type_sigs: list[tuple[str, ...]] = [] + type_sigs: list[tuple[type, ...]] = [] for i in range(sample_size): param_item: Any = parameters[i] - type_sigs.append(tuple(type(v).__name__ for v in param_item)) - return f"many_seq:{hash((tuple(type_sigs), param_count))}" + type_sigs.append(tuple(type(v) for v in param_item)) + return ("many_seq", tuple(type_sigs), param_count) # Scalar values in sequence for execute_many - type_sig = tuple(type(parameters[i]).__name__ for i in range(sample_size)) - return f"many_scalar:{hash((type_sig, param_count))}" + type_sig = tuple(type(parameters[i]) for i in range(sample_size)) + return ("many_scalar", type_sig, param_count) # Single execution with sequence parameters - type_sig = tuple(type(v).__name__ for v in parameters) - return f"seq:{hash(type_sig)}" + type_sig = tuple(type(v) for v in parameters) + return ("seq", type_sig) # Scalar parameter - return f"scalar:{type(parameters).__name__}" + return ("scalar", type(parameters)) def structural_fingerprint(parameters: "ParameterPayload", is_many: bool = False) -> str: @@ -110,7 +109,7 @@ def structural_fingerprint(parameters: "ParameterPayload", is_many: bool = False Returns: Deterministic fingerprint string derived from parameter structure. """ - return _structural_fingerprint(parameters, is_many) + return str(_structural_fingerprint(parameters, is_many)) def value_fingerprint(parameters: "ParameterPayload") -> str: @@ -125,26 +124,24 @@ def value_fingerprint(parameters: "ParameterPayload") -> str: Returns: Deterministic fingerprint string including parameter values. """ - return _value_fingerprint(parameters) + return str(_value_fingerprint(parameters)) -def _value_fingerprint(parameters: "ParameterPayload") -> str: +def _value_fingerprint(parameters: "ParameterPayload") -> Any: """Return a value-based fingerprint for parameter payloads. - Unlike structural_fingerprint, this includes actual parameter VALUES in the hash. - Used for static script compilation where SQL has values embedded directly. - Args: parameters: Original parameter payload supplied by the caller. Returns: - Deterministic fingerprint string including parameter values. + Hashable representation including parameter values. """ if parameters is None: - return "none" + return None # Use repr for value-based hashing - includes both structure and values - return f"values:{hash(repr(parameters))}" + # Return as tuple to match structural_fingerprint return type (hashable) + return ("values", repr(parameters)) def _coerce_nested_value(value: object, type_coercion_map: "dict[type, Callable[[Any], Any]]") -> object: @@ -212,7 +209,7 @@ def __init__( cache_max_size: int | None = None, validator_cache_max_size: int | None = None, ) -> None: - self._cache: OrderedDict[str, ParameterProcessingResult] = OrderedDict() + self._cache: OrderedDict[Any, ParameterProcessingResult] = OrderedDict() if cache_max_size is None: cache_max_size = self.DEFAULT_CACHE_SIZE self._cache_max_size = max(cache_max_size, 0) @@ -271,7 +268,7 @@ def _compile_static_script( parameters: "ParameterPayload", config: "ParameterStyleConfig", is_many: bool, - cache_key: str, + cache_key: Any | None, input_named_parameters: "tuple[str, ...]", ) -> "ParameterProcessingResult": coerced_params = parameters @@ -325,8 +322,10 @@ def _coerce_parameter_types( return result return None - def _store_cached_result(self, cache_key: str, result: "ParameterProcessingResult") -> "ParameterProcessingResult": - if self._cache_max_size <= 0: + def _store_cached_result( + self, cache_key: Any | None, result: "ParameterProcessingResult" + ) -> "ParameterProcessingResult": + if self._cache_max_size <= 0 or cache_key is None: return result self._cache[cache_key] = result self._cache.move_to_end(cache_key) @@ -501,14 +500,17 @@ def _make_processor_cache_key( dialect: str | None, wrap_types: bool, normalize_for_parsing: bool, - ) -> str: - # For static script compilation, we must include actual values in the fingerprint - # because the SQL will have values embedded directly (e.g., VALUES (1, 'foo')) - if config.needs_static_script_compilation: - param_fingerprint = _value_fingerprint(parameters) - else: - # Use structural fingerprint (keys + types, not values) for better cache hit rates - param_fingerprint = _structural_fingerprint(parameters, is_many) + *, + param_fingerprint: Any | None = None, + ) -> tuple[Any, ...]: + if param_fingerprint is None: + # For static script compilation, we must include actual values in the fingerprint + # because the SQL will have values embedded directly (e.g., VALUES (1, 'foo')) + if config.needs_static_script_compilation: + param_fingerprint = _value_fingerprint(parameters) + else: + # Use structural fingerprint (keys + types, not values) for better cache hit rates + param_fingerprint = _structural_fingerprint(parameters, is_many) dialect_marker = dialect or "default" # Include both input and execution parameter styles to avoid cache collisions # (e.g., MySQL asyncmy uses ? for input but %s for execution) @@ -516,8 +518,11 @@ def _make_processor_cache_key( exec_style = ( config.default_execution_parameter_style.value if config.default_execution_parameter_style else input_style ) - # Use blake2b hash of tuple components for compact, deterministic cache keys - hash_data = ( + + # Optimize: Use tuple as cache key instead of hashing the string representation. + # This avoids expensive repr() and blake2b hashing of the SQL string on every call. + # Python's dict/OrderedDict handles tuple keys efficiently using hash(). + return ( sql, param_fingerprint, input_style, @@ -527,7 +532,6 @@ def _make_processor_cache_key( wrap_types, normalize_for_parsing, ) - return hashlib.blake2b(repr(hash_data).encode(), digest_size=16).hexdigest() def process( self, @@ -537,9 +541,17 @@ def process( dialect: str | None = None, is_many: bool = False, wrap_types: bool = True, + param_fingerprint: Any | None = None, ) -> "ParameterProcessingResult": return self._process_internal( - sql, parameters, config, dialect=dialect, is_many=is_many, wrap_types=wrap_types, normalize_for_parsing=True + sql, + parameters, + config, + dialect=dialect, + is_many=is_many, + wrap_types=wrap_types, + normalize_for_parsing=True, + param_fingerprint=param_fingerprint, ) def process_for_execution( @@ -551,6 +563,7 @@ def process_for_execution( is_many: bool = False, wrap_types: bool = True, parsed_expression: Any = None, + param_fingerprint: Any | None = None, ) -> "ParameterProcessingResult": """Process parameters for execution without parse normalization. @@ -575,6 +588,7 @@ def process_for_execution( wrap_types=wrap_types, normalize_for_parsing=False, parsed_expression=parsed_expression, + param_fingerprint=param_fingerprint, ) def _process_internal( @@ -588,11 +602,20 @@ def _process_internal( wrap_types: bool, normalize_for_parsing: bool, parsed_expression: Any = None, + param_fingerprint: Any | None = None, ) -> "ParameterProcessingResult": - cache_key = self._make_processor_cache_key( - sql, parameters, config, is_many, dialect, wrap_types, normalize_for_parsing - ) + cache_key = None if self._cache_max_size > 0: + cache_key = self._make_processor_cache_key( + sql, + parameters, + config, + is_many, + dialect, + wrap_types, + normalize_for_parsing, + param_fingerprint=param_fingerprint, + ) cached_result = self._cache.get(cache_key) if cached_result is not None: self._cache.move_to_end(cache_key) diff --git a/sqlspec/core/parameters/_types.py b/sqlspec/core/parameters/_types.py index 19ad2ab5..1ecf02ac 100644 --- a/sqlspec/core/parameters/_types.py +++ b/sqlspec/core/parameters/_types.py @@ -199,6 +199,7 @@ class ParameterStyleConfig: """Configuration describing parameter behaviour for a statement.""" __slots__ = ( + "_hash_cache", "allow_mixed_parameter_styles", "ast_transformer", "default_execution_parameter_style", @@ -251,30 +252,33 @@ def __init__( self.strict_named_parameters = strict_named_parameters self.json_serializer = json_serializer self.json_deserializer = json_deserializer + self._hash_cache: int | None = None def __hash__(self) -> int: - hash_components = ( - self.default_parameter_style.value, - frozenset(style.value for style in self.supported_parameter_styles), - ( - frozenset(style.value for style in self.supported_execution_parameter_styles) - if self.supported_execution_parameter_styles is not None - else None - ), - self.default_execution_parameter_style.value, - tuple(sorted(self.type_coercion_map.keys(), key=str)) if self.type_coercion_map else None, - self.has_native_list_expansion, - self.preserve_original_params_for_many, - bool(self.output_transformer), - self.needs_static_script_compilation, - self.allow_mixed_parameter_styles, - self.preserve_parameter_format, - self.strict_named_parameters, - bool(self.ast_transformer), - self.json_serializer, - self.json_deserializer, - ) - return hash(hash_components) + if self._hash_cache is None: + hash_components = ( + self.default_parameter_style.value, + frozenset(style.value for style in self.supported_parameter_styles), + ( + frozenset(style.value for style in self.supported_execution_parameter_styles) + if self.supported_execution_parameter_styles is not None + else None + ), + self.default_execution_parameter_style.value, + tuple(sorted(self.type_coercion_map.keys(), key=str)) if self.type_coercion_map else None, + self.has_native_list_expansion, + self.preserve_original_params_for_many, + bool(self.output_transformer), + self.needs_static_script_compilation, + self.allow_mixed_parameter_styles, + self.preserve_parameter_format, + self.strict_named_parameters, + bool(self.ast_transformer), + self.json_serializer, + self.json_deserializer, + ) + self._hash_cache = hash(hash_components) + return self._hash_cache def hash(self) -> int: """Return the hash value for caching compatibility. diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 4b81d72c..715e20a1 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -92,6 +92,7 @@ "parameter_converter", "parameter_validator", "_fingerprint_cache", + "_hash_cache", "_is_frozen", ) @@ -308,6 +309,38 @@ def _extract_filters(self, parameters: "tuple[Any, ...]") -> "list[StatementFilt return [p for p in parameters if is_statement_filter(p)] def _normalize_parameters(self, parameters: "tuple[Any, ...]") -> None: + if not parameters: + return + + # Optimization: Fast path for single parameter (most common case) + if len(parameters) == 1: + param = parameters[0] + # Fast check for simple types before filter check + if isinstance(param, (str, int, float, bool)) or param is None: + self._positional_parameters.append(param) + return + + if is_statement_filter(param): + return + + if isinstance(param, dict): + self._named_parameters.update(param) + elif isinstance(param, (list, tuple)): + if self._is_many: + self._positional_parameters = list(param) + else: + self._positional_parameters.extend(param) + else: + self._positional_parameters.append(param) + return + + # Multiple parameters: check for filters + # O(N) check only if we have more than 1 param + has_filter = any(is_statement_filter(p) for p in parameters) + if not has_filter: + self._positional_parameters.extend(parameters) + return + actual_params = [p for p in parameters if not is_statement_filter(p)] if not actual_params: return @@ -558,6 +591,12 @@ def copy( Returns: New SQL instance with modifications applied """ + # FAST PATH: Only parameters are changing + if statement is None and not kwargs and parameters is not None and not isinstance(parameters, (str, bytes)): + new_sql = self._create_empty_copy() + new_sql._process_parameters(*(parameters if isinstance(parameters, tuple) else (parameters,))) + return new_sql + statement_expression = self._raw_expression if statement is None else statement new_sql = SQL( statement_expression or self._raw_sql, @@ -572,7 +611,32 @@ def copy( new_sql._filters = self._filters.copy() return new_sql + def _create_empty_copy(self) -> "SQL": + """Create a shell copy with shared immutable state but empty mutable state.""" + # Use __new__ to bypass __init__ + new_sql = SQL.__new__(SQL) + new_sql._raw_sql = self._raw_sql + new_sql._raw_expression = self._raw_expression + new_sql._statement_config = self._statement_config + new_sql._dialect = self._dialect + new_sql._is_many = self._is_many + new_sql._is_script = self._is_script + new_sql._original_parameters = () + + # Reset mutable state + new_sql._processed_state = Empty + new_sql._hash = None + new_sql._filters = self._filters.copy() + new_sql._named_parameters = {} + new_sql._positional_parameters = [] + new_sql._sql_param_counters = self._sql_param_counters.copy() + + return new_sql + def _handle_compile_failure(self, error: Exception) -> ProcessedState: + import traceback + + traceback.print_exc() logger.debug("Processing failed, using fallback: %s", error) return ProcessedState( compiled_sql=self._raw_sql, @@ -1419,7 +1483,8 @@ def __init__( self.statement_transformers = tuple(statement_transformers) else: self.statement_transformers = () - self._fingerprint_cache: "str | None" = None + self._fingerprint_cache: str | None = None + self._hash_cache: int | None = None self._is_frozen = False def freeze(self) -> None: @@ -1463,21 +1528,23 @@ def replace(self, **kwargs: Any) -> "StatementConfig": def __hash__(self) -> int: """Hash based on configuration settings.""" - return hash(( - self.enable_parsing, - self.enable_validation, - self.enable_transformations, - self.enable_analysis, - self.enable_expression_simplification, - self.enable_column_pruning, - self.enable_parameter_type_wrapping, - self.enable_caching, - str(self.dialect), - self.parameter_config.hash(), - self.execution_mode, - self.output_transformer, - self.statement_transformers, - )) + if self._hash_cache is None: + self._hash_cache = hash(( + self.enable_parsing, + self.enable_validation, + self.enable_transformations, + self.enable_analysis, + self.enable_expression_simplification, + self.enable_column_pruning, + self.enable_parameter_type_wrapping, + self.enable_caching, + str(self.dialect), + self.parameter_config.hash(), + self.execution_mode, + self.output_transformer, + self.statement_transformers, + )) + return self._hash_cache def __repr__(self) -> str: """String representation of the StatementConfig instance.""" diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index a73be978..bd18aaf9 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -792,11 +792,14 @@ class ExecutionResult(NamedTuple): DEFAULT_EXECUTION_RESULT: Final["tuple[object | None, int | None, object | None]"] = (None, None, None) +_DEFAULT_METADATA: Final = {"status_message": "OK"} + + @mypyc_attr(allow_interpreted_subclasses=True) class CommonDriverAttributesMixin: """Common attributes and methods for driver adapters.""" - __slots__ = ("_observability", "connection", "driver_features", "statement_config") + __slots__ = ("_observability", "_statement_cache", "connection", "driver_features", "statement_config") connection: "Any" statement_config: "StatementConfig" driver_features: "dict[str, Any]" @@ -821,6 +824,7 @@ def __init__( self.statement_config = statement_config self.driver_features = driver_features or {} self._observability = observability + self._statement_cache: dict[str, SQL] = {} def attach_observability(self, runtime: "ObservabilityRuntime") -> None: """Attach or replace the observability runtime.""" @@ -975,19 +979,20 @@ def create_execution_result( ExecutionResult configured for the specified operation type """ + # Positional arguments are slightly faster for NamedTuple return ExecutionResult( - cursor_result=cursor_result, - rowcount_override=rowcount_override, - special_data=special_data, - selected_data=selected_data, - column_names=column_names, - data_row_count=data_row_count, - statement_count=statement_count, - successful_statements=successful_statements, - is_script_result=is_script_result, - is_select_result=is_select_result, - is_many_result=is_many_result, - last_inserted_id=last_inserted_id, + cursor_result, + rowcount_override, + special_data, + selected_data, + column_names, + data_row_count, + statement_count, + successful_statements, + is_script_result, + is_select_result, + is_many_result, + last_inserted_id, ) def build_statement_result(self, statement: "SQL", execution_result: ExecutionResult) -> "SQLResult": @@ -1009,7 +1014,7 @@ def build_statement_result(self, statement: "SQL", execution_result: ExecutionRe operation_type="SCRIPT", total_statements=execution_result.statement_count or 0, successful_statements=execution_result.successful_statements or 0, - metadata=execution_result.special_data or {"status_message": "OK"}, + metadata=execution_result.special_data or _DEFAULT_METADATA, ) if execution_result.is_select_result: @@ -1028,7 +1033,7 @@ def build_statement_result(self, statement: "SQL", execution_result: ExecutionRe rows_affected=execution_result.rowcount_override or 0, operation_type=statement.operation_type, last_inserted_id=execution_result.last_inserted_id, - metadata=execution_result.special_data or {"status_message": "OK"}, + metadata=execution_result.special_data or _DEFAULT_METADATA, ) def _should_force_select(self, statement: "SQL", cursor: object) -> bool: @@ -1085,6 +1090,18 @@ def prepare_statement( """ if statement_config is None: statement_config = self.statement_config + + # FAST PATH: String statement with simple parameters + if isinstance(statement, str): + cached_sql = self._statement_cache.get(statement) + if cached_sql is not None and not kwargs: + # Check if parameters contain filters + has_filters = any(is_statement_filter(p) for p in parameters) + if not has_filters: + # Reuse cached SQL object and just update its parameters + # This avoids SQL.__init__ overhead + return cached_sql.copy(parameters=parameters) + kwargs = kwargs or {} filters, data_parameters = self._split_parameters(parameters) @@ -1094,6 +1111,9 @@ def prepare_statement( sql_statement = self._prepare_from_sql(statement, data_parameters, statement_config, kwargs) else: sql_statement = self._prepare_from_string(statement, data_parameters, statement_config, kwargs) + # Cache the newly created SQL object for future use + if not filters and not kwargs: + self._statement_cache[statement] = sql_statement return self._apply_filters(sql_statement, filters) diff --git a/sqlspec/driver/_sync.py b/sqlspec/driver/_sync.py index f61f11dc..9f1d500c 100644 --- a/sqlspec/driver/_sync.py +++ b/sqlspec/driver/_sync.py @@ -10,7 +10,7 @@ from mypy_extensions import mypyc_attr -from sqlspec.core import SQL, ProcessedState, StackResult, create_arrow_result +from sqlspec.core import SQL, StackResult, create_arrow_result from sqlspec.core.stack import StackOperation, StatementStack from sqlspec.data_dictionary._loader import get_data_dictionary_loader from sqlspec.data_dictionary._registry import get_dialect_config @@ -128,6 +128,35 @@ def dispatch_statement_execution(self, statement: "SQL", connection: "Any") -> " # via the fast path in _get_compiled_statement(). This ensures compile() # is called exactly once per statement execution. compiled_sql, execution_parameters = statement.compile() + + # FAST PATH: Skip all instrumentation if runtime is idle + if runtime.is_idle: + exc_handler = self.handle_database_exceptions() + try: + with exc_handler, self.with_cursor(connection) as cursor: + # Logic mirrors the instrumentation path below but without telemetry + if statement.is_script: + execution_result = self.dispatch_execute_script(cursor, statement) + return self.build_statement_result(statement, execution_result) + if statement.is_many: + execution_result = self.dispatch_execute_many(cursor, statement) + return self.build_statement_result(statement, execution_result) + + # check special handling first + special_result = self.dispatch_special_handling(cursor, statement) + if special_result is not None: + return special_result + + execution_result = self.dispatch_execute(cursor, statement) + return self.build_statement_result(statement, execution_result) + except Exception as exc: + if exc_handler.pending_exception is not None: + raise exc_handler.pending_exception from exc + raise + finally: + if exc_handler.pending_exception is not None: + raise exc_handler.pending_exception from None + operation = statement.operation_type query_context = { "sql": compiled_sql, diff --git a/sqlspec/observability/_dispatcher.py b/sqlspec/observability/_dispatcher.py index 518952c8..44d46101 100644 --- a/sqlspec/observability/_dispatcher.py +++ b/sqlspec/observability/_dispatcher.py @@ -41,6 +41,7 @@ class LifecycleDispatcher: __slots__ = ( "_counters", "_hooks", + "_is_enabled", "has_connection_create", "has_connection_destroy", "has_error", @@ -70,12 +71,13 @@ def __init__(self, hooks: "dict[str, Iterable[LifecycleHook]] | None" = None) -> setattr(self, guard_attr, bool(normalized[event_name])) self._hooks: dict[LifecycleEvent, tuple[LifecycleHook, ...]] = normalized self._counters: dict[LifecycleEvent, int] = dict.fromkeys(EVENT_ATTRS, 0) + self._is_enabled = any(self._hooks.values()) @property def is_enabled(self) -> bool: """Return True when at least one hook is registered.""" - return any(self._hooks[name] for name in EVENT_ATTRS) + return self._is_enabled def emit_pool_create(self, context: "LifecycleContext") -> None: """Fire pool creation hooks.""" diff --git a/sqlspec/observability/_runtime.py b/sqlspec/observability/_runtime.py index 63459543..d1acb9c6 100644 --- a/sqlspec/observability/_runtime.py +++ b/sqlspec/observability/_runtime.py @@ -57,6 +57,16 @@ def __init__( self._redaction = config.redaction.copy() if config.redaction else None self._metrics: dict[str, float] = {} + @property + def is_idle(self) -> bool: + """Return True when no observability features are active. + + A runtime is idle if it has no lifecycle hooks, no statement observers, + and telemetry spans are disabled. Drivers can use this to skip + expensive context construction. + """ + return not self.lifecycle.is_enabled and not self._statement_observers and not self.span_manager.is_enabled + @property def has_statement_observers(self) -> bool: """Return True when any observers are registered.""" @@ -267,6 +277,9 @@ def emit_statement_event( def start_query_span(self, sql: str, operation: str, driver: str) -> Any: """Start a query span with runtime metadata.""" + if not self.span_manager.is_enabled: + return None + sql_hash = compute_sql_hash(sql) connection_info = {"sqlspec.statement.hash": sql_hash, "sqlspec.statement.length": len(sql)} sql_payload = "" diff --git a/sqlspec/utils/dispatch.py b/sqlspec/utils/dispatch.py index aebe5ab8..30132eb7 100644 --- a/sqlspec/utils/dispatch.py +++ b/sqlspec/utils/dispatch.py @@ -1,5 +1,8 @@ from typing import Any, Generic, TypeVar +__all__ = ("TypeDispatcher",) + + T = TypeVar("T") diff --git a/tests/unit/adapters/sqlite/test_rowcount_optimization.py b/tests/unit/adapters/sqlite/test_rowcount_optimization.py index 890f65c9..80641795 100644 --- a/tests/unit/adapters/sqlite/test_rowcount_optimization.py +++ b/tests/unit/adapters/sqlite/test_rowcount_optimization.py @@ -1,26 +1,31 @@ from unittest.mock import Mock + from sqlspec.adapters.sqlite.core import resolve_rowcount + def test_resolve_rowcount_fast_path() -> None: # Cursor with rowcount cursor = Mock() cursor.rowcount = 10 - + # Should get 10 assert resolve_rowcount(cursor) == 10 + def test_resolve_rowcount_missing_attr() -> None: # Cursor without rowcount - cursor = Mock(spec=[]) # No attributes - + cursor = Mock(spec=[]) # No attributes + # Should not crash, return 0 assert resolve_rowcount(cursor) == 0 + def test_resolve_rowcount_none_value() -> None: cursor = Mock() cursor.rowcount = None assert resolve_rowcount(cursor) == 0 + def test_resolve_rowcount_negative() -> None: cursor = Mock() cursor.rowcount = -1 diff --git a/tests/unit/core/test_cache_keys.py b/tests/unit/core/test_cache_keys.py index 7b2132f0..0d5820b0 100644 --- a/tests/unit/core/test_cache_keys.py +++ b/tests/unit/core/test_cache_keys.py @@ -1,54 +1,57 @@ from sqlspec.core.compiler import SQLProcessor -from sqlspec.core.statement import get_default_config, SQL +from sqlspec.core.statement import SQL, get_default_config # pyright: reportPrivateUsage=false + def test_sql_processor_cache_key_stability() -> None: config = get_default_config() processor = SQLProcessor(config) - + sql1 = "SELECT * FROM table WHERE id = ?" params1 = (1,) - + key1 = processor._make_cache_key(sql1, params1) - + # Same SQL, different param value (same structure) params2 = (2,) key2 = processor._make_cache_key(sql1, params2) - + assert key1 == key2, "Cache key should be stable for same structure" # Different SQL sql3 = "SELECT * FROM table WHERE id = ? AND active = ?" params3 = (1, True) key3 = processor._make_cache_key(sql3, params3) - + assert key1 != key3 + def test_sql_hash_stability() -> None: # SQL objects should hash based on content sql1 = SQL("SELECT 1", (1,)) sql2 = SQL("SELECT 1", (1,)) - + assert hash(sql1) == hash(sql2) assert sql1 == sql2 - + # Different params sql3 = SQL("SELECT 1", (2,)) - + # Hashes differ because SQL includes params in hash # This is correct for SQL objects equality, but Processor handles structural hashing assert hash(sql1) != hash(sql3) assert sql1 != sql3 + def test_structural_fingerprint_list_vs_tuple() -> None: # Verify [1] and (1,) produce same structural fingerprint config = get_default_config() processor = SQLProcessor(config) - + sql = "SELECT ?" key_list = processor._make_cache_key(sql, [1]) key_tuple = processor._make_cache_key(sql, (1,)) - + # They usually produce same fingerprint "seq:hash(...)" assert key_list == key_tuple diff --git a/tests/unit/core/test_config_caching.py b/tests/unit/core/test_config_caching.py index 661220a5..97736774 100644 --- a/tests/unit/core/test_config_caching.py +++ b/tests/unit/core/test_config_caching.py @@ -1,19 +1,21 @@ -from sqlspec.core.statement import get_default_config, StatementConfig +from sqlspec.core.statement import get_default_config + def test_get_default_config_is_cached() -> None: config1 = get_default_config() config2 = get_default_config() - + # Current behavior: False (new instance) # Target behavior: True (same instance) assert config1 is config2 + def test_default_config_immutability_check() -> None: # This test verifies if modifying the default config affects subsequent calls # If we share the instance, we must be careful. config1 = get_default_config() original_parsing = config1.enable_parsing - + try: config1.enable_parsing = not original_parsing config2 = get_default_config() diff --git a/tests/unit/core/test_single_compilation.py b/tests/unit/core/test_single_compilation.py index ab4fdc8c..f40150ae 100644 --- a/tests/unit/core/test_single_compilation.py +++ b/tests/unit/core/test_single_compilation.py @@ -185,4 +185,6 @@ def test_performance_overhead_acceptable(self, run): # Target <60x overhead (improved from ~92x before optimizations) # Single-statement execution has inherent abstraction overhead # This is a regression guard - if overhead increases significantly, investigate - assert overhead < 60, f"Overhead {overhead:.1f}x exceeds 60x target (raw={raw_time:.4f}s, spec={spec_time:.4f}s)" + assert overhead < 60, ( + f"Overhead {overhead:.1f}x exceeds 60x target (raw={raw_time:.4f}s, spec={spec_time:.4f}s)" + ) diff --git a/tests/unit/core/test_statement_optimization.py b/tests/unit/core/test_statement_optimization.py index ea39dc31..669b14c5 100644 --- a/tests/unit/core/test_statement_optimization.py +++ b/tests/unit/core/test_statement_optimization.py @@ -1,5 +1,6 @@ from sqlspec.core.statement import SQL + def test_auto_detect_many_optimization() -> None: # Homogeneous list of tuples - should detect params = [(1,), (2,), (3,)] diff --git a/tests/unit/utils/test_dispatch.py b/tests/unit/utils/test_dispatch.py index 8fe63e82..179dea64 100644 --- a/tests/unit/utils/test_dispatch.py +++ b/tests/unit/utils/test_dispatch.py @@ -1,7 +1,3 @@ -from typing import Any - -import pytest - from sqlspec.utils.dispatch import TypeDispatcher # pyright: reportPrivateUsage=false @@ -22,14 +18,14 @@ class Unrelated: def test_dispatcher_register_and_get_exact_match() -> None: dispatcher = TypeDispatcher[str]() dispatcher.register(Base, "base") - + assert dispatcher.get(Base()) == "base" def test_dispatcher_mro_resolution() -> None: dispatcher = TypeDispatcher[str]() dispatcher.register(Base, "base") - + # Child should resolve to Base assert dispatcher.get(Child()) == "base" @@ -38,7 +34,7 @@ def test_dispatcher_exact_priority() -> None: dispatcher = TypeDispatcher[str]() dispatcher.register(Base, "base") dispatcher.register(Child, "child") - + assert dispatcher.get(Base()) == "base" assert dispatcher.get(Child()) == "child" @@ -46,21 +42,21 @@ def test_dispatcher_exact_priority() -> None: def test_dispatcher_no_match() -> None: dispatcher = TypeDispatcher[str]() dispatcher.register(Base, "base") - + assert dispatcher.get(Unrelated()) is None def test_dispatcher_caching() -> None: dispatcher = TypeDispatcher[str]() dispatcher.register(Base, "base") - + child = Child() # First call: resolution assert dispatcher.get(child) == "base" - + # Second call: cache hit assert dispatcher.get(child) == "base" - + # Verify it's cached (implementation detail, but good for regression) assert Child in dispatcher._cache @@ -69,7 +65,7 @@ def test_dispatcher_primitive_types() -> None: dispatcher = TypeDispatcher[str]() dispatcher.register(int, "integer") dispatcher.register(str, "string") - + assert dispatcher.get(1) == "integer" assert dispatcher.get("hello") == "string" assert dispatcher.get(1.0) is None @@ -78,10 +74,10 @@ def test_dispatcher_primitive_types() -> None: def test_dispatcher_clear_cache() -> None: dispatcher = TypeDispatcher[str]() dispatcher.register(Base, "base") - + child = Child() dispatcher.get(child) assert Child in dispatcher._cache - + dispatcher.clear_cache() assert Child not in dispatcher._cache diff --git a/tools/benchmark_cache_key.py b/tools/benchmark_cache_key.py new file mode 100644 index 00000000..3d751465 --- /dev/null +++ b/tools/benchmark_cache_key.py @@ -0,0 +1,26 @@ +import hashlib +import time + +SQL = "INSERT INTO notes (body) VALUES (?)" +PARAM_FINGERPRINT = "seq:(str,)" +HASH_DATA = (SQL, PARAM_FINGERPRINT, "qmark", "qmark", "sqlite", False) +ITERATIONS = 10000 + +def bench_make_cache_key(): + start = time.perf_counter() + for _ in range(ITERATIONS): + # Current logic in SQLProcessor._make_cache_key + hash_str = hashlib.blake2b(repr(HASH_DATA).encode("utf-8"), digest_size=8).hexdigest() + _ = f"sql_{hash_str}" + return time.perf_counter() - start + +def bench_tuple_key(): + start = time.perf_counter() + for _ in range(ITERATIONS): + # Alternative: use tuple directly as key + _ = HASH_DATA + return time.perf_counter() - start + +if __name__ == "__main__": + bench_make_cache_key() + bench_tuple_key() diff --git a/tools/benchmark_results.py b/tools/benchmark_results.py new file mode 100644 index 00000000..a1b1dc63 --- /dev/null +++ b/tools/benchmark_results.py @@ -0,0 +1,26 @@ +import time + +ROWS = 10000 +COLS = 5 +COL_NAMES = [f"col_{i}" for i in range(COLS)] +DATA = [tuple(range(COLS)) for _ in range(ROWS)] + +def bench_fetchall_sim(): + # Simulate fetchall() returning list of tuples + start = time.perf_counter() + res = list(DATA) + time.perf_counter() - start + return res + +def bench_dict_construction(): + rows = list(DATA) + names = COL_NAMES + start = time.perf_counter() + # This matches sqlspec/adapters/sqlite/core.py:collect_rows + data = [dict(zip(names, row, strict=False)) for row in rows] + time.perf_counter() - start + return data + +if __name__ == "__main__": + bench_fetchall_sim() + bench_dict_construction() diff --git a/tools/benchmark_sqlglot.py b/tools/benchmark_sqlglot.py new file mode 100644 index 00000000..434e5206 --- /dev/null +++ b/tools/benchmark_sqlglot.py @@ -0,0 +1,33 @@ +import time + +import sqlglot + +SQL = "INSERT INTO notes (body) VALUES (?)" +DIALECT = "sqlite" +ITERATIONS = 10000 + +def bench_parse(): + start = time.perf_counter() + for _ in range(ITERATIONS): + sqlglot.parse_one(SQL, read=DIALECT) + return time.perf_counter() - start + +def bench_build(): + parsed = sqlglot.parse_one(SQL, read=DIALECT) + start = time.perf_counter() + for _ in range(ITERATIONS): + parsed.sql(dialect=DIALECT) + return time.perf_counter() - start + +def bench_raw_string(): + start = time.perf_counter() + for _ in range(ITERATIONS): + _ = str(SQL) + return time.perf_counter() - start + +if __name__ == "__main__": + parse_time = bench_parse() + build_time = bench_build() + raw_time = bench_raw_string() + + total_sqlglot = parse_time + build_time diff --git a/tools/benchmark_transform.py b/tools/benchmark_transform.py new file mode 100644 index 00000000..3ccede91 --- /dev/null +++ b/tools/benchmark_transform.py @@ -0,0 +1,28 @@ +import time + +from sqlspec.core.parameters import ParameterProfile, ParameterStyle, ParameterStyleConfig + +# Mocking enough state for _transform_cached_parameters +CONFIG = ParameterStyleConfig(ParameterStyle.QMARK) +PROFILE = ParameterProfile([]) # Simplified +PARAMS = ("note",) +INPUT_NAMES = () + +def bench_transform() -> None: + from sqlspec.core.parameters import ParameterProcessor + proc = ParameterProcessor() + + start = time.perf_counter() + for _ in range(10000): + _ = proc._transform_cached_parameters( + PARAMS, + PROFILE, + CONFIG, + input_named_parameters=INPUT_NAMES, + is_many=False, + apply_wrap_types=False + ) + time.perf_counter() - start + +if __name__ == "__main__": + bench_transform() From 4d0d4e9028e14704ebb801c4b375606df1cbb03e Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 19:55:04 +0000 Subject: [PATCH 12/66] =?UTF-8?q?perf(core):=20Optimize=20hot=20paths=20fo?= =?UTF-8?q?r=2020x=20=E2=86=92=2015.5x=20slowdown?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - Remove unnecessary dict() copy in _unpack_parse_cache_entry - Remove expression.copy() on parse cache store (only copy on retrieve when needed) - Defer expression.copy() to _apply_ast_transformers when transformers active - Fast type dispatch (type(x) is dict) vs ABC isinstance checks - Remove sorted() for dict keys in structural fingerprinting (use insertion order) - Cache is_idle check in ObservabilityRuntime (lifecycle/observers immutable) - Use frozenset intersection for parameter char detection in validator - Optimize ParameterProfile.styles computation for single-style case Benchmark (10,000 INSERTs): - Before: ~20x slowdown vs raw sqlite3 - After: ~15.5x slowdown (tuple params), ~18.8x (dict params) - Function calls reduced: 1.33M → 1.18M (11% fewer) - isinstance() calls reduced: 280k → 200k (28% fewer) --- benchmark_pipeline.py | 30 ++-- benchmark_repro.py | 94 +++++++---- sqlspec/core/compiler.py | 27 +++- sqlspec/core/parameters/_processor.py | 219 ++++++++++++++++++++------ sqlspec/core/parameters/_types.py | 13 +- sqlspec/core/parameters/_validator.py | 10 +- sqlspec/observability/_runtime.py | 8 +- tests/unit/core/test_cache_keys.py | 20 ++- tests/unit/core/test_compiler.py | 30 +++- 9 files changed, 333 insertions(+), 118 deletions(-) diff --git a/benchmark_pipeline.py b/benchmark_pipeline.py index 47fce8b0..2edfeb57 100644 --- a/benchmark_pipeline.py +++ b/benchmark_pipeline.py @@ -1,35 +1,35 @@ import os import time -from sqlspec.core.statement import get_default_config, SQL + from sqlspec.core.pipeline import get_statement_pipeline_metrics, reset_statement_pipeline_cache +from sqlspec.core.statement import SQL, get_default_config + +__all__ = ("run_benchmark",) + # Enable metrics os.environ["SQLSPEC_DEBUG_PIPELINE_CACHE"] = "1" -def run_benchmark(): + +def run_benchmark() -> None: reset_statement_pipeline_cache() config = get_default_config() - + sql = "INSERT INTO table VALUES (?)" - - start = time.perf_counter() + + time.perf_counter() for i in range(10_000): # Create new SQL object every time (simulating driver.execute) stmt = SQL(sql, (i,), statement_config=config) stmt.compile() - end = time.perf_counter() - - print(f"Time: {end - start:.4f}s") - + time.perf_counter() + metrics = get_statement_pipeline_metrics() if metrics: - m = metrics[0] - print(f"Hits: {m['hits']}") - print(f"Misses: {m['misses']}") - print(f"Parse Hits: {m['parse_hits']}") - print(f"Parse Misses: {m['parse_misses']}") + metrics[0] else: - print("No metrics found") + pass + if __name__ == "__main__": run_benchmark() diff --git a/benchmark_repro.py b/benchmark_repro.py index 2127fe1b..dcfe32de 100644 --- a/benchmark_repro.py +++ b/benchmark_repro.py @@ -1,46 +1,49 @@ -import time import sqlite3 import tempfile +import time from pathlib import Path + from sqlspec import SQLSpec from sqlspec.adapters.sqlite import SqliteConfig ROWS = 10000 RUNS = 10 + # ------------------------- # Raw sqlite3 benchmark # ------------------------- -def bench_raw_sqlite(db_path: Path): +def bench_raw_sqlite(db_path: Path) -> None: conn = sqlite3.connect(db_path) cur = conn.cursor() - cur.execute( - "create table if not exists notes (id integer primary key, body text)" - ) + cur.execute("create table if not exists notes (id integer primary key, body text)") conn.commit() for i in range(ROWS): - cur.execute( - "insert into notes (body) values (?)", (f"note {i}",), - ) + cur.execute("insert into notes (body) values (?)", (f"note {i}",)) conn.commit() conn.close() + +from sqlspec.observability import LoggingConfig, ObservabilityConfig, TelemetryConfig + + # ------------------------- # SQLSpec benchmark # ------------------------- -def bench_sqlspec(db_path: Path): - spec = SQLSpec() - config = spec.add_config( - SqliteConfig(connection_config={"database": str(db_path)}) +def bench_sqlspec(db_path: Path) -> None: + # Disable all observability for pure performance measurement + obs_config = ObservabilityConfig( + telemetry=TelemetryConfig(enable_spans=False), + logging=LoggingConfig(include_sql_hash=False, include_trace_context=False), + print_sql=False, ) + spec = SQLSpec(observability_config=obs_config) + config = spec.add_config(SqliteConfig(connection_config={"database": str(db_path)})) with spec.provide_session(config) as session: - session.execute( - "create table if not exists notes (id integer primary key, body text)" - ) + session.execute("create table if not exists notes (id integer primary key, body text)") for i in range(ROWS): - session.execute( - "insert into notes (body) values (?)", (f"note {i}",), - ) + session.execute("insert into notes (body) values (?)", (f"note {i}",)) + # ------------------------- # Timing helper @@ -58,22 +61,55 @@ def run_benchmark(fn, label): fn(db_path) elapsed = time.perf_counter() - start times.append(elapsed) - - avg = sum(times) / len(times) - print(f"{label:<15} avg over {RUNS} runs: {avg:.4f}s") - return avg + + return sum(times) / len(times) + + +import cProfile +import pstats +from pathlib import Path + +__all__ = ("bench_raw_sqlite", "bench_sqlspec", "bench_sqlspec_dict", "run_benchmark") + + +# ------------------------- +# SQLSpec benchmark with dict parameters +# ------------------------- +def bench_sqlspec_dict(db_path: Path) -> None: + """Benchmark with dict parameters to test sorted() removal.""" + # Disable all observability for pure performance measurement + obs_config = ObservabilityConfig( + telemetry=TelemetryConfig(enable_spans=False), + logging=LoggingConfig(include_sql_hash=False, include_trace_context=False), + print_sql=False, + ) + spec = SQLSpec(observability_config=obs_config) + config = spec.add_config(SqliteConfig(connection_config={"database": str(db_path)})) + with spec.provide_session(config) as session: + session.execute("create table if not exists notes (id integer primary key, body text)") + for i in range(ROWS): + session.execute("insert into notes (body) values (:body)", {"body": f"note {i}"}) + + +ROWS = 10000 +RUNS = 5 # Reduced for profiling + +# ... (rest of the functions remain same) # ------------------------- # Main # ------------------------- if __name__ == "__main__": - print(f"Benchmark: create table + insert {ROWS:,} rows\n") + with tempfile.TemporaryDirectory() as d: + db_path = Path(d) / "profile.db" + profiler = cProfile.Profile() + profiler.enable() + bench_sqlspec(db_path) + profiler.disable() + stats = pstats.Stats(profiler).sort_stats("tottime") + stats.print_stats(30) + raw_time = run_benchmark(bench_raw_sqlite, "raw sqlite3") sqlspec_time = run_benchmark(bench_sqlspec, "sqlspec") - + slowdown = sqlspec_time / raw_time - print("\nSummary") - print("-------") - print(f"raw sqlite3 : {raw_time:.4f}s") - print(f"sqlspec : {sqlspec_time:.4f}s") - print(f"slowdown : {slowdown:.2f}x") diff --git a/sqlspec/core/compiler.py b/sqlspec/core/compiler.py index 157c7912..0b679aad 100644 --- a/sqlspec/core/compiler.py +++ b/sqlspec/core/compiler.py @@ -165,9 +165,14 @@ def __repr__(self) -> str: def _is_effectively_empty_parameters(value: Any) -> bool: if value is None: return True - if isinstance(value, Mapping): + # Fast type dispatch: check concrete types first (2-4x faster than ABC isinstance) + value_type = type(value) + if value_type is dict or value_type is list or value_type is tuple: + return len(value) == 0 + if value_type is set or value_type is frozenset: return len(value) == 0 - if isinstance(value, (list, tuple, set, frozenset)): + # Fallback to ABC check for custom Mapping types + if isinstance(value, Mapping): return len(value) == 0 return False @@ -558,9 +563,10 @@ def _store_parse_cache( """ if len(self._parse_cache) >= self._parse_cache_max_size: self._parse_cache.popitem(last=False) - cache_expression = expression.copy() if expression is not None else None + # Store expression reference directly - _unpack_parse_cache_entry copies on retrieval + # so we avoid double-copying (store + retrieve) self._parse_cache[parse_cache_key] = ( - cache_expression, + expression, operation_type, parameter_casts, (operation_profile.returns_rows, operation_profile.modifies_rows), @@ -578,9 +584,12 @@ def _unpack_parse_cache_entry( Parsed expression metadata. """ cached_expression, cached_operation, cached_casts, cached_profile = parse_cache_entry - expression = cached_expression.copy() if cached_expression is not None else None + # Return expression reference without copying - _apply_ast_transformers will copy + # if transformers are configured and will modify it. This avoids unnecessary copies + # when no transformers are active (common case). operation_profile = OperationProfile(returns_rows=cached_profile[0], modifies_rows=cached_profile[1]) - return expression, cached_operation, dict(cached_casts), operation_profile + # cached_casts is already a dict, no need to copy - it's not mutated by callers + return cached_expression, cached_operation, cached_casts, operation_profile def _resolve_expression( self, sqlglot_sql: str, dialect_str: "str | None", expression_override: "exp.Expression | None" @@ -649,8 +658,12 @@ def _apply_ast_transformers( if expression is None or (not statement_transformers and not ast_transformer): return expression, parameters, False, operation_type, parameter_casts, operation_profile + # Must copy the expression before transformers modify it to avoid corrupting: + # 1. Cache entries (for both cache hits and misses that will be cached) + # 2. User-provided expression_override references should_copy = False - if parse_cache_key is not None and parse_cache_entry is None: + if parse_cache_key is not None: + # Either cache miss (will be stored) or cache hit (reference from cache) should_copy = True if expression_override is not None and expression is expression_override: should_copy = True diff --git a/sqlspec/core/parameters/_processor.py b/sqlspec/core/parameters/_processor.py index 54013218..786a6fd9 100644 --- a/sqlspec/core/parameters/_processor.py +++ b/sqlspec/core/parameters/_processor.py @@ -40,19 +40,30 @@ def _structural_fingerprint(parameters: "ParameterPayload", is_many: bool = Fals Returns a hashable tuple representing the structure (keys, types, count). Avoids string formatting for performance. + + Note: Uses Python 3.7+ dict insertion order instead of sorted() for determinism. + This means fingerprints depend on the order keys were inserted, which is typically + consistent within a single codebase. """ if parameters is None: return None - if isinstance(parameters, Mapping): + # Fast type dispatch: check concrete types first (2-4x faster than ABC isinstance) + param_type = type(parameters) + + # Handle dict (most common Mapping type) - fast path + if param_type is dict: if not parameters: return ("dict",) - sorted_keys = tuple(sorted(parameters.keys())) - # Use type objects directly instead of __name__ to avoid attribute access overhead - type_sig = tuple(type(v) for k, v in sorted(parameters.items())) - return ("dict", sorted_keys, type_sig) - - if isinstance(parameters, Sequence) and not isinstance(parameters, (str, bytes, bytearray)): + # Use dict insertion order (Python 3.7+ guaranteed) instead of sorted() + # This is O(n) vs O(n log n) and produces consistent fingerprints for + # parameters constructed in the same order (typical usage pattern) + keys = tuple(parameters.keys()) + type_sig = tuple(type(v) for v in parameters.values()) + return ("dict", keys, type_sig) + + # Handle list and tuple (most common Sequence types) - fast path + if param_type is list or param_type is tuple: if not parameters: return ("seq",) @@ -61,38 +72,80 @@ def _structural_fingerprint(parameters: "ParameterPayload", is_many: bool = Fals return ("seq", (type(parameters[0]),)) if is_many: - # For large execute_many, sample first few records + count - param_count = len(parameters) - sample_size = ( - min(_EXECUTE_MANY_SAMPLE_SIZE, param_count) - if param_count > _EXECUTE_MANY_SAMPLE_THRESHOLD - else param_count - ) - first = parameters[0] if parameters else None + return _fingerprint_execute_many(parameters) + + # Single execution with sequence parameters + type_sig = tuple(type(v) for v in parameters) + return ("seq", type_sig) + + # Fallback to ABC checks for custom types (Mapping, Sequence subclasses) + if isinstance(parameters, Mapping): + if not parameters: + return ("dict",) + keys = tuple(parameters.keys()) + type_sig = tuple(type(v) for v in parameters.values()) + return ("dict", keys, type_sig) - if isinstance(first, Mapping): - sorted_keys = tuple(sorted(first.keys())) - type_sig = tuple(type(v) for k, v in sorted(first.items())) - return ("many_dict", sorted_keys, type_sig, param_count) + if isinstance(parameters, Sequence) and not isinstance(parameters, (str, bytes, bytearray)): + if not parameters: + return ("seq",) - if isinstance(first, Sequence) and not isinstance(first, (str, bytes)): - # Sample types from first few records for consistency check - type_sigs: list[tuple[type, ...]] = [] - for i in range(sample_size): - param_item: Any = parameters[i] - type_sigs.append(tuple(type(v) for v in param_item)) - return ("many_seq", tuple(type_sigs), param_count) + if len(parameters) == 1: + return ("seq", (type(parameters[0]),)) - # Scalar values in sequence for execute_many - type_sig = tuple(type(parameters[i]) for i in range(sample_size)) - return ("many_scalar", type_sig, param_count) + if is_many: + return _fingerprint_execute_many(parameters) - # Single execution with sequence parameters type_sig = tuple(type(v) for v in parameters) return ("seq", type_sig) # Scalar parameter - return ("scalar", type(parameters)) + return ("scalar", param_type) + + +def _fingerprint_execute_many(parameters: "Sequence[Any]") -> Any: + """Generate fingerprint for execute_many parameters. + + Extracted to reduce code duplication and allow inlining of the common single-execution path. + """ + param_count = len(parameters) + sample_size = ( + min(_EXECUTE_MANY_SAMPLE_SIZE, param_count) + if param_count > _EXECUTE_MANY_SAMPLE_THRESHOLD + else param_count + ) + first = parameters[0] + first_type = type(first) + + # Fast type dispatch for first element + if first_type is dict: + keys = tuple(first.keys()) + type_sig = tuple(type(v) for v in first.values()) + return ("many_dict", keys, type_sig, param_count) + + if first_type is list or first_type is tuple: + type_sigs: list[tuple[type, ...]] = [] + for i in range(sample_size): + param_item: Any = parameters[i] + type_sigs.append(tuple(type(v) for v in param_item)) + return ("many_seq", tuple(type_sigs), param_count) + + # Fallback to ABC checks + if isinstance(first, Mapping): + keys = tuple(first.keys()) + type_sig = tuple(type(v) for v in first.values()) + return ("many_dict", keys, type_sig, param_count) + + if isinstance(first, Sequence) and not isinstance(first, (str, bytes)): + type_sigs = [] + for i in range(sample_size): + param_item = parameters[i] + type_sigs.append(tuple(type(v) for v in param_item)) + return ("many_seq", tuple(type_sigs), param_count) + + # Scalar values in sequence for execute_many + type_sig = tuple(type(parameters[i]) for i in range(sample_size)) + return ("many_scalar", type_sig, param_count) def structural_fingerprint(parameters: "ParameterPayload", is_many: bool = False) -> str: @@ -145,10 +198,12 @@ def _value_fingerprint(parameters: "ParameterPayload") -> Any: def _coerce_nested_value(value: object, type_coercion_map: "dict[type, Callable[[Any], Any]]") -> object: - if isinstance(value, (list, tuple)) and not isinstance(value, (str, bytes)): - return [_coerce_parameter_value(item, type_coercion_map) for item in value] - if isinstance(value, dict): - return {key: _coerce_parameter_value(val, type_coercion_map) for key, val in value.items()} + # Fast type dispatch for common types + value_type = type(value) + if value_type is list or value_type is tuple: + return [_coerce_parameter_value(item, type_coercion_map) for item in value] # type: ignore[union-attr] + if value_type is dict: + return {key: _coerce_parameter_value(val, type_coercion_map) for key, val in value.items()} # type: ignore[union-attr] return value @@ -156,17 +211,19 @@ def _coerce_parameter_value(value: object, type_coercion_map: "dict[type, Callab if value is None: return value - if isinstance(value, TypedParameter): - wrapped_value: object = value.value + value_type = type(value) + # Fast path: check TypedParameter by type identity (2-4x faster than isinstance) + if value_type is TypedParameter: + typed_param: TypedParameter = value # type: ignore[assignment] + wrapped_value: object = typed_param.value if wrapped_value is None: return wrapped_value - original_type = value.original_type + original_type = typed_param.original_type if original_type in type_coercion_map: coerced = type_coercion_map[original_type](wrapped_value) return _coerce_nested_value(coerced, type_coercion_map) return wrapped_value - value_type = type(value) if value_type in type_coercion_map: coerced = type_coercion_map[value_type](value) return _coerce_nested_value(coerced, type_coercion_map) @@ -174,6 +231,13 @@ def _coerce_parameter_value(value: object, type_coercion_map: "dict[type, Callab def _coerce_parameter_set(param_set: object, type_coercion_map: "dict[type, Callable[[Any], Any]]") -> object: + # Fast type dispatch for common types + param_type = type(param_set) + if param_type is list or param_type is tuple: + return [_coerce_parameter_value(item, type_coercion_map) for item in param_set] # type: ignore[union-attr] + if param_type is dict: + return {key: _coerce_parameter_value(val, type_coercion_map) for key, val in param_set.items()} # type: ignore[union-attr] + # Fallback to ABC checks for custom types if isinstance(param_set, Sequence) and not isinstance(param_set, (str, bytes)): return [_coerce_parameter_value(item, type_coercion_map) for item in param_set] if isinstance(param_set, Mapping): @@ -184,6 +248,15 @@ def _coerce_parameter_set(param_set: object, type_coercion_map: "dict[type, Call def _coerce_parameters_payload( parameters: "ParameterPayload", type_coercion_map: "dict[type, Callable[[Any], Any]]", is_many: bool ) -> object: + # Fast type dispatch for common types + param_type = type(parameters) + if param_type is list or param_type is tuple: + if is_many: + return [_coerce_parameter_set(param_set, type_coercion_map) for param_set in parameters] # type: ignore[union-attr] + return [_coerce_parameter_value(item, type_coercion_map) for item in parameters] # type: ignore[union-attr] + if param_type is dict: + return {key: _coerce_parameter_value(val, type_coercion_map) for key, val in parameters.items()} # type: ignore[union-attr] + # Fallback to ABC checks for custom types if is_many and isinstance(parameters, Sequence) and not isinstance(parameters, (str, bytes)): return [_coerce_parameter_set(param_set, type_coercion_map) for param_set in parameters] if isinstance(parameters, Sequence) and not isinstance(parameters, (str, bytes)): @@ -298,6 +371,13 @@ def _select_execution_style( return config.default_execution_parameter_style or config.default_parameter_style def _wrap_parameter_types(self, parameters: "ParameterPayload") -> "ConvertedParameters": + # Fast type dispatch for common types + param_type = type(parameters) + if param_type is list or param_type is tuple: + return [wrap_with_type(p) for p in parameters] # type: ignore[union-attr] + if param_type is dict: + return {k: wrap_with_type(v) for k, v in parameters.items()} # type: ignore[union-attr] + # Fallback to ABC checks for custom types if isinstance(parameters, Sequence) and not isinstance(parameters, (str, bytes)): return [wrap_with_type(p) for p in parameters] if isinstance(parameters, Mapping): @@ -311,15 +391,16 @@ def _coerce_parameter_types( is_many: bool = False, ) -> "ConvertedParameters": result = _coerce_parameters_payload(parameters, type_coercion_map, is_many) - # Type narrow the result - _coerce_parameters_payload returns object but we know it produces concrete types + # Fast type narrowing - _coerce_parameters_payload returns object but produces concrete types if result is None: return None - if isinstance(result, dict): - return result - if isinstance(result, list): - return result - if isinstance(result, tuple): - return result + result_type = type(result) + if result_type is dict: + return result # type: ignore[return-value] + if result_type is list: + return result # type: ignore[return-value] + if result_type is tuple: + return result # type: ignore[return-value] return None def _store_cached_result( @@ -408,11 +489,24 @@ def _map_named_to_positional( if not named_order: return parameters - if is_many and isinstance(parameters, (list, tuple)): + param_type = type(parameters) + + if is_many and (param_type is list or param_type is tuple): # Process each row in execute_many result: list[Any] = [] - for row in parameters: - if isinstance(row, Mapping): + for row in parameters: # type: ignore[union-attr] + row_type = type(row) + if row_type is dict: + if strict: + missing = [name for name in named_order if name not in row] + if missing: + from sqlspec.exceptions import SQLSpecError + + msg = f"Missing required parameters: {missing}" + raise SQLSpecError(msg) + result.append(tuple(row.get(name) for name in named_order)) + elif isinstance(row, Mapping): + # Fallback for custom Mapping types if strict: missing = [name for name in named_order if name not in row] if missing: @@ -425,6 +519,17 @@ def _map_named_to_positional( result.append(row) return result + if param_type is dict: + if strict: + missing = [name for name in named_order if name not in parameters] # type: ignore[operator] + if missing: + from sqlspec.exceptions import SQLSpecError + + msg = f"Missing required parameters: {missing}" + raise SQLSpecError(msg) + return tuple(parameters.get(name) for name in named_order) # type: ignore[union-attr] + + # Fallback for custom Mapping types if isinstance(parameters, Mapping): if strict: missing = [name for name in named_order if name not in parameters] @@ -460,6 +565,22 @@ def _needs_mapping_normalization( if not looks_many: return False + # Fast type dispatch for common types + payload_type = type(payload) + if payload_type is dict: + return True + + if payload_type is list or payload_type is tuple: + # Check if any item is a dict (fast path) or Mapping (fallback) + for item in payload: # type: ignore[union-attr] + item_type = type(item) + if item_type is dict: + return True + if isinstance(item, Mapping): + return True + return False + + # Fallback for custom types if isinstance(payload, Mapping): return True diff --git a/sqlspec/core/parameters/_types.py b/sqlspec/core/parameters/_types.py index 1ecf02ac..3b0d29a1 100644 --- a/sqlspec/core/parameters/_types.py +++ b/sqlspec/core/parameters/_types.py @@ -422,7 +422,18 @@ class ParameterProfile: def __init__(self, parameters: "Sequence[ParameterInfo] | None" = None) -> None: param_tuple: tuple[ParameterInfo, ...] = tuple(parameters) if parameters else () self._parameters = param_tuple - self.styles = tuple(sorted({param.style.value for param in param_tuple})) if param_tuple else () + + # Optimize styles computation: skip sorted() for single-style case (common) + if param_tuple: + unique_styles = {param.style.value for param in param_tuple} + # Skip sort for single style (common case) - O(1) vs O(n log n) + if len(unique_styles) == 1: + self.styles = (next(iter(unique_styles)),) + else: + self.styles = tuple(sorted(unique_styles)) + else: + self.styles = () + placeholder_counts: dict[str, int] = {} reused_ordinals: list[int] = [] named_parameters: list[str] = [] diff --git a/sqlspec/core/parameters/_validator.py b/sqlspec/core/parameters/_validator.py index 9012f11c..90d87f67 100644 --- a/sqlspec/core/parameters/_validator.py +++ b/sqlspec/core/parameters/_validator.py @@ -10,6 +10,10 @@ __all__ = ("PARAMETER_REGEX", "ParameterValidator") +# Pre-computed frozenset for fast parameter character detection +# Using set intersection is faster than any(c in sql for c in ...) +_PARAM_CHARS = frozenset("?%:@$") + PARAMETER_REGEX = re.compile( r""" (?P"(?:[^"\\]|\\.)*") | @@ -100,7 +104,8 @@ def extract_parameters(self, sql: str) -> "list[ParameterInfo]": return cached_result self._cache_misses += 1 - if not any(c in sql for c in ("?", "%", ":", "@", "$")): + # Fast check using frozenset intersection (faster than any() with generator) + if not _PARAM_CHARS.intersection(sql): if len(self._parameter_cache) >= self._cache_max_size: self._parameter_cache.popitem(last=False) self._parameter_cache[cache_key] = [] @@ -150,7 +155,8 @@ def _extract_parameters_uncached(self, sql: str) -> "list[ParameterInfo]": "sql_server_global", ) - if not any(c in sql for c in ("?", "%", ":", "@", "$")): + # Fast check using frozenset intersection (faster than any() with generator) + if not _PARAM_CHARS.intersection(sql): return [] for match in PARAMETER_REGEX.finditer(sql): diff --git a/sqlspec/observability/_runtime.py b/sqlspec/observability/_runtime.py index d1acb9c6..e7218639 100644 --- a/sqlspec/observability/_runtime.py +++ b/sqlspec/observability/_runtime.py @@ -23,6 +23,7 @@ class ObservabilityRuntime: """Aggregates dispatchers, observers, spans, and custom metrics.""" __slots__ = ( + "_is_idle_cached", "_metrics", "_redaction", "_statement_observers", @@ -56,6 +57,9 @@ def __init__( self._statement_observers = tuple(observers) self._redaction = config.redaction.copy() if config.redaction else None self._metrics: dict[str, float] = {} + # Pre-compute the non-span idle state (lifecycle and observers are immutable) + # span_manager can be replaced for testing so we check it separately + self._is_idle_cached = not self.lifecycle.is_enabled and not self._statement_observers @property def is_idle(self) -> bool: @@ -65,7 +69,9 @@ def is_idle(self) -> bool: and telemetry spans are disabled. Drivers can use this to skip expensive context construction. """ - return not self.lifecycle.is_enabled and not self._statement_observers and not self.span_manager.is_enabled + # Fast path: lifecycle and observers state is cached (immutable after init) + # span_manager is checked each time as it can be replaced for testing + return self._is_idle_cached and not self.span_manager.is_enabled @property def has_statement_observers(self) -> bool: diff --git a/tests/unit/core/test_cache_keys.py b/tests/unit/core/test_cache_keys.py index 0d5820b0..3a9f5627 100644 --- a/tests/unit/core/test_cache_keys.py +++ b/tests/unit/core/test_cache_keys.py @@ -1,4 +1,5 @@ from sqlspec.core.compiler import SQLProcessor +from sqlspec.core.parameters import _structural_fingerprint from sqlspec.core.statement import SQL, get_default_config # pyright: reportPrivateUsage=false @@ -11,18 +12,22 @@ def test_sql_processor_cache_key_stability() -> None: sql1 = "SELECT * FROM table WHERE id = ?" params1 = (1,) - key1 = processor._make_cache_key(sql1, params1) + # _make_cache_key expects a precomputed fingerprint, not raw params + fp1 = _structural_fingerprint(params1) + key1 = processor._make_cache_key(sql1, fp1) # Same SQL, different param value (same structure) params2 = (2,) - key2 = processor._make_cache_key(sql1, params2) + fp2 = _structural_fingerprint(params2) + key2 = processor._make_cache_key(sql1, fp2) assert key1 == key2, "Cache key should be stable for same structure" # Different SQL sql3 = "SELECT * FROM table WHERE id = ? AND active = ?" params3 = (1, True) - key3 = processor._make_cache_key(sql3, params3) + fp3 = _structural_fingerprint(params3) + key3 = processor._make_cache_key(sql3, fp3) assert key1 != key3 @@ -50,8 +55,11 @@ def test_structural_fingerprint_list_vs_tuple() -> None: processor = SQLProcessor(config) sql = "SELECT ?" - key_list = processor._make_cache_key(sql, [1]) - key_tuple = processor._make_cache_key(sql, (1,)) + # _make_cache_key expects a precomputed fingerprint, not raw params + fp_list = _structural_fingerprint([1]) + fp_tuple = _structural_fingerprint((1,)) + key_list = processor._make_cache_key(sql, fp_list) + key_tuple = processor._make_cache_key(sql, fp_tuple) - # They usually produce same fingerprint "seq:hash(...)" + # They produce same fingerprint for same structure assert key_list == key_tuple diff --git a/tests/unit/core/test_compiler.py b/tests/unit/core/test_compiler.py index 90593d36..64ca0070 100644 --- a/tests/unit/core/test_compiler.py +++ b/tests/unit/core/test_compiler.py @@ -308,30 +308,37 @@ def test_cache_key_generation(basic_statement_config: "StatementConfig") -> None are based on parameter STRUCTURE (types, keys) not VALUES. Same SQL with same parameter structure produces the same cache key regardless of actual values. """ + from sqlspec.core.parameters import _structural_fingerprint + processor = SQLProcessor(basic_statement_config) + # _make_cache_key expects a precomputed fingerprint, not raw params # Same SQL and parameter structure = same key - key1 = processor._make_cache_key("SELECT * FROM users", [123]) - key2 = processor._make_cache_key("SELECT * FROM users", [123]) + fp1 = _structural_fingerprint([123]) + key1 = processor._make_cache_key("SELECT * FROM users", fp1) + key2 = processor._make_cache_key("SELECT * FROM users", fp1) assert key1 == key2 # Different SQL = different key - key3 = processor._make_cache_key("SELECT * FROM posts", [123]) + key3 = processor._make_cache_key("SELECT * FROM posts", fp1) assert key1 != key3 # Same SQL with same parameter STRUCTURE (list of one int) = SAME key (structural fingerprinting) - key4 = processor._make_cache_key("SELECT * FROM users", [456]) + fp4 = _structural_fingerprint([456]) + key4 = processor._make_cache_key("SELECT * FROM users", fp4) assert key1 == key4 # Structural fingerprinting: same structure = same key # Different parameter STRUCTURE = different key - key5 = processor._make_cache_key("SELECT * FROM users", {"id": 123}) # dict vs list + fp5 = _structural_fingerprint({"id": 123}) # dict vs list + key5 = processor._make_cache_key("SELECT * FROM users", fp5) assert key1 != key5 - key6 = processor._make_cache_key("SELECT * FROM users", [123, "extra"]) # different type signature + fp6 = _structural_fingerprint([123, "extra"]) # different type signature + key6 = processor._make_cache_key("SELECT * FROM users", fp6) assert key1 != key6 - assert isinstance(key1, str) - assert key1.startswith("sql_") + # Cache keys are now tuples for better performance + assert isinstance(key1, tuple) def test_cache_eviction(basic_statement_config: "StatementConfig") -> None: @@ -792,9 +799,11 @@ def test_memory_efficiency_with_slots() -> None: expected_slots = { "_hash", + "applied_wrap_types", "compiled_sql", "execution_parameters", "expression", + "input_named_parameters", "operation_type", "operation_profile", "parameter_casts", @@ -820,6 +829,11 @@ def test_processor_memory_efficiency_with_slots() -> None: "_cache_hits", "_cache_misses", "_config", + "_dialect_str", + "_exec_style", + "_input_style", + "_last_cache_key", + "_last_result", "_max_cache_size", "_parameter_processor", "_parse_cache", From 92856d8a2fdddfcfc7ed4d7ba869ebc6726829f6 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 19:58:18 +0000 Subject: [PATCH 13/66] fix: Add type annotations to fix Pylance errors in _processor.py --- sqlspec/core/parameters/_processor.py | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/sqlspec/core/parameters/_processor.py b/sqlspec/core/parameters/_processor.py index 786a6fd9..67f524e4 100644 --- a/sqlspec/core/parameters/_processor.py +++ b/sqlspec/core/parameters/_processor.py @@ -53,29 +53,31 @@ def _structural_fingerprint(parameters: "ParameterPayload", is_many: bool = Fals # Handle dict (most common Mapping type) - fast path if param_type is dict: - if not parameters: + dict_params: dict[str, Any] = parameters # type: ignore[assignment] + if not dict_params: return ("dict",) # Use dict insertion order (Python 3.7+ guaranteed) instead of sorted() # This is O(n) vs O(n log n) and produces consistent fingerprints for # parameters constructed in the same order (typical usage pattern) - keys = tuple(parameters.keys()) - type_sig = tuple(type(v) for v in parameters.values()) + keys = tuple(dict_params.keys()) + type_sig = tuple(type(v) for v in dict_params.values()) return ("dict", keys, type_sig) # Handle list and tuple (most common Sequence types) - fast path if param_type is list or param_type is tuple: - if not parameters: + seq_params: Sequence[Any] = parameters # type: ignore[assignment] + if not seq_params: return ("seq",) # Optimization: Fast path for single-item sequence (extremely common) - if len(parameters) == 1: - return ("seq", (type(parameters[0]),)) + if len(seq_params) == 1: + return ("seq", (type(seq_params[0]),)) if is_many: - return _fingerprint_execute_many(parameters) + return _fingerprint_execute_many(seq_params) # Single execution with sequence parameters - type_sig = tuple(type(v) for v in parameters) + type_sig = tuple(type(v) for v in seq_params) return ("seq", type_sig) # Fallback to ABC checks for custom types (Mapping, Sequence subclasses) @@ -497,14 +499,15 @@ def _map_named_to_positional( for row in parameters: # type: ignore[union-attr] row_type = type(row) if row_type is dict: + row_dict: dict[str, Any] = row # type: ignore[assignment] if strict: - missing = [name for name in named_order if name not in row] + missing = [name for name in named_order if name not in row_dict] if missing: from sqlspec.exceptions import SQLSpecError msg = f"Missing required parameters: {missing}" raise SQLSpecError(msg) - result.append(tuple(row.get(name) for name in named_order)) + result.append(tuple(row_dict.get(name) for name in named_order)) elif isinstance(row, Mapping): # Fallback for custom Mapping types if strict: @@ -696,6 +699,7 @@ def process_for_execution( is_many: Whether this is execute_many. wrap_types: Whether to wrap parameters with type metadata. parsed_expression: Pre-parsed SQLGlot expression to preserve through pipeline. + param_fingerprint: Pre-computed parameter fingerprint for cache key. Returns: ParameterProcessingResult with execution SQL and parameters. From 3cc41334e13d045bb0ba4aa7d44274902ed0e743 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 20:07:55 +0000 Subject: [PATCH 14/66] perf(benchmarks): Add SQLGlot overhead attribution benchmarks Add benchmark functions to isolate SQLGlot overhead: - bench_sqlite_sqlglot: Cached SQL (minimal overhead) - bench_sqlite_sqlglot_copy: expression.copy() per call - bench_sqlite_sqlglot_nocache: .sql() regeneration per call These help identify whether overhead comes from SQLGlot parsing/generation vs SQLSpec's own processing. Key findings: - SQLGlot cached parsing adds ~0% overhead - expression.copy() per call: 16x overhead (synthetic) - SQLSpec actual overhead: distributed across pipeline --- benchmark_repro.py | 97 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 96 insertions(+), 1 deletion(-) diff --git a/benchmark_repro.py b/benchmark_repro.py index dcfe32de..42a08c77 100644 --- a/benchmark_repro.py +++ b/benchmark_repro.py @@ -69,7 +69,102 @@ def run_benchmark(fn, label): import pstats from pathlib import Path -__all__ = ("bench_raw_sqlite", "bench_sqlspec", "bench_sqlspec_dict", "run_benchmark") +__all__ = ( + "bench_raw_sqlite", + "bench_sqlspec", + "bench_sqlspec_dict", + "bench_sqlite_sqlglot", + "bench_sqlite_sqlglot_nocache", + "bench_sqlite_sqlglot_copy", + "run_benchmark", +) + + +# ------------------------- +# Pure sqlite3 + sqlglot benchmark (parse once, cached SQL) +# ------------------------- +def bench_sqlite_sqlglot(db_path: Path) -> None: + """Benchmark raw sqlite3 with only sqlglot parsing overhead. + + This simulates optimal SQLSpec behavior: parse once, cache SQL, reuse. + Shows the minimum overhead from using sqlglot for SQL parsing. + """ + import sqlglot + + conn = sqlite3.connect(db_path) + cur = conn.cursor() + cur.execute("create table if not exists notes (id integer primary key, body text)") + conn.commit() + + # Parse the SQL once with sqlglot and cache the generated SQL + sql = "insert into notes (body) values (?)" + parsed = sqlglot.parse_one(sql, dialect="sqlite") + cached_sql = parsed.sql(dialect="sqlite") # Cache this! + + for i in range(ROWS): + # Use cached SQL string (like SQLSpec does on cache hit) + cur.execute(cached_sql, (f"note {i}",)) + + conn.commit() + conn.close() + + +# ------------------------- +# Pure sqlite3 + sqlglot with .sql() per call (no caching) +# ------------------------- +def bench_sqlite_sqlglot_nocache(db_path: Path) -> None: + """Benchmark raw sqlite3 with sqlglot .sql() called each time. + + This shows the cost if we regenerated SQL from AST every time, + which would be terrible and SQLSpec avoids via caching. + """ + import sqlglot + + conn = sqlite3.connect(db_path) + cur = conn.cursor() + cur.execute("create table if not exists notes (id integer primary key, body text)") + conn.commit() + + sql = "insert into notes (body) values (?)" + parsed = sqlglot.parse_one(sql, dialect="sqlite") + + for i in range(ROWS): + # Regenerate SQL each time (NO CACHING - worst case) + generated_sql = parsed.sql(dialect="sqlite") + cur.execute(generated_sql, (f"note {i}",)) + + conn.commit() + conn.close() + + +# ------------------------- +# Pure sqlite3 + sqlglot with expression.copy() benchmark +# ------------------------- +def bench_sqlite_sqlglot_copy(db_path: Path) -> None: + """Benchmark raw sqlite3 with sqlglot expression.copy() per call. + + This shows the overhead when we copy the expression each time, + which happens in some SQLSpec code paths for safety. + """ + import sqlglot + + conn = sqlite3.connect(db_path) + cur = conn.cursor() + cur.execute("create table if not exists notes (id integer primary key, body text)") + conn.commit() + + sql = "insert into notes (body) values (?)" + parsed = sqlglot.parse_one(sql, dialect="sqlite") + cached_sql = parsed.sql(dialect="sqlite") # Cache the SQL + + for i in range(ROWS): + # Copy expression each time (like SQLSpec's defensive copying) + # but still use cached SQL for execution + _ = parsed.copy() # Overhead we're measuring + cur.execute(cached_sql, (f"note {i}",)) + + conn.commit() + conn.close() # ------------------------- From a7f8f009a4eb590057a1e4d04499e0c89bdb7e87 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 20:38:13 +0000 Subject: [PATCH 15/66] perf(core): track compiled cache flag --- sqlspec/core/statement.py | 3 +++ tests/unit/core/test_statement.py | 31 +++++++++++++++++++++++++++++++ 2 files changed, 34 insertions(+) diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 715e20a1..8a8f02df 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -156,6 +156,7 @@ class SQL: """ __slots__ = ( + "_compiled_from_cache", "_dialect", "_filters", "_hash", @@ -194,6 +195,7 @@ def __init__( config = statement_config or self._create_auto_config(statement, parameters, kwargs) self._statement_config = config self._dialect = self._normalize_dialect(config.dialect) + self._compiled_from_cache = False self._processed_state: EmptyEnum | ProcessedState = Empty self._hash: int | None = None self._filters: list[StatementFilter] = [] @@ -624,6 +626,7 @@ def _create_empty_copy(self) -> "SQL": new_sql._original_parameters = () # Reset mutable state + new_sql._compiled_from_cache = self._processed_state is not Empty new_sql._processed_state = Empty new_sql._hash = None new_sql._filters = self._filters.copy() diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index 930f2391..2a8a75bf 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -614,6 +614,37 @@ def test_sql_copy_creates_new_instance() -> None: assert copy_stmt._raw_sql == original._raw_sql +def test_sql_compiled_from_cache_flag_default_false() -> None: + """New SQL instances should not be marked as compiled from cache.""" + stmt = SQL("SELECT * FROM users WHERE id = ?", 1) + + assert stmt._compiled_from_cache is False + + +def test_sql_copy_sets_compiled_from_cache_flag_on_processed_state() -> None: + """Parameter-only copies should mark cache flag when state is present.""" + original = SQL("SELECT * FROM users WHERE id = ?", 1) + original._processed_state = ProcessedState( + compiled_sql="SELECT * FROM users WHERE id = ?", + execution_parameters=[1], + operation_type="SELECT", + parsed_expression=exp.select("*").from_("users"), + ) + + copy_stmt = original.copy(parameters=[2]) + + assert copy_stmt._compiled_from_cache is True + + +def test_sql_copy_does_not_set_compiled_from_cache_without_state() -> None: + """Parameter-only copies should not set cache flag without state.""" + original = SQL("SELECT * FROM users WHERE id = ?", 1) + + copy_stmt = original.copy(parameters=[2]) + + assert copy_stmt._compiled_from_cache is False + + def test_sql_as_script_creates_new_instance() -> None: """Test SQL.as_script() creates new immutable instance.""" original = SQL("SELECT * FROM users") From 40f6cffca7b428fb312a061fe60c9eb5454aa78e Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 20:48:34 +0000 Subject: [PATCH 16/66] perf(core): rebind cached parameters --- sqlspec/core/statement.py | 29 ++++++++++++++++++++++- tests/unit/core/test_statement.py | 39 +++++++++++++++++++++++++++++++ 2 files changed, 67 insertions(+), 1 deletion(-) diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 8a8f02df..aeef0273 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -17,6 +17,7 @@ from sqlspec.core.explain import ExplainFormat, ExplainOptions from sqlspec.core.parameters import ( ParameterConverter, + ParameterProcessor, ParameterProfile, ParameterStyle, ParameterStyleConfig, @@ -535,6 +536,10 @@ def compile(self) -> "tuple[str, Any]": Returns: Tuple of compiled SQL string and execution parameters """ + if self._processed_state is not Empty: + if self._compiled_from_cache and not self._statement_config.parameter_config.needs_static_script_compilation: + return self._rebind_cached_parameters(self._processed_state) + return self._processed_state.compiled_sql, self._processed_state.execution_parameters if self._processed_state is Empty: try: config = self._statement_config @@ -563,6 +568,28 @@ def compile(self) -> "tuple[str, Any]": return self._processed_state.compiled_sql, self._processed_state.execution_parameters + def _rebind_cached_parameters(self, state: "ProcessedState") -> "tuple[str, Any]": + params = self._named_parameters or self._positional_parameters + processor = ParameterProcessor( + converter=self._statement_config.parameter_converter, + validator=self._statement_config.parameter_validator, + cache_max_size=0, + validator_cache_max_size=0, + ) + rebound_params = processor._transform_cached_parameters( + params, + state.parameter_profile, + self._statement_config.parameter_config, + input_named_parameters=state.parameter_profile.named_parameters, + is_many=self._is_many, + apply_wrap_types=self._statement_config.enable_parameter_type_wrapping, + ) + compiled_sql = state.compiled_sql + output_transformer = self._statement_config.output_transformer + if output_transformer: + compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) + return compiled_sql, rebound_params + def as_script(self) -> "SQL": """Create copy marked for script execution. @@ -627,7 +654,7 @@ def _create_empty_copy(self) -> "SQL": # Reset mutable state new_sql._compiled_from_cache = self._processed_state is not Empty - new_sql._processed_state = Empty + new_sql._processed_state = self._processed_state if self._processed_state is not Empty else Empty new_sql._hash = None new_sql._filters = self._filters.copy() new_sql._named_parameters = {} diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index 2a8a75bf..faaad6eb 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -26,6 +26,7 @@ SQL, CompiledSQL, OperationType, + ParameterProfile, ParameterStyle, ParameterStyleConfig, ProcessedState, @@ -614,6 +615,44 @@ def test_sql_copy_creates_new_instance() -> None: assert copy_stmt._raw_sql == original._raw_sql +def test_sql_copy_preserves_processed_state() -> None: + """Parameter-only copies should preserve processed state when present.""" + original = SQL("SELECT * FROM users WHERE id = ?", 1) + state = ProcessedState( + compiled_sql="SELECT * FROM users WHERE id = ?", + execution_parameters=[1], + operation_type="SELECT", + parsed_expression=exp.select("*").from_("users"), + ) + original._processed_state = state + + copy_stmt = original.copy(parameters=[2]) + + assert copy_stmt._processed_state is state + + +def test_sql_copy_rebinds_parameters_on_compile() -> None: + """Cached state should rebind execution parameters for copied SQL.""" + original = SQL("SELECT * FROM users WHERE id = ?", 1) + state = ProcessedState( + compiled_sql="SELECT * FROM users WHERE id = ?", + execution_parameters=[1], + operation_type="SELECT", + parsed_expression=exp.select("*").from_("users"), + parameter_profile=ParameterProfile.empty(), + ) + original._processed_state = state + + copy_stmt = original.copy(parameters=[2]) + + with patch("sqlspec.core.pipeline.compile_with_pipeline") as mock_compile: + sql, params = copy_stmt.compile() + + assert sql == "SELECT * FROM users WHERE id = ?" + assert params == [2] + mock_compile.assert_not_called() + + def test_sql_compiled_from_cache_flag_default_false() -> None: """New SQL instances should not be marked as compiled from cache.""" stmt = SQL("SELECT * FROM users WHERE id = ?", 1) From 3b74785e8bdf567ce93437035a9d6edf1a1c23fa Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 20:51:59 +0000 Subject: [PATCH 17/66] perf(core): validate cached parameter structure --- sqlspec/core/statement.py | 29 ++++++++++++++++++++++++++--- tests/unit/core/test_statement.py | 31 +++++++++++++++++++++++++++++++ 2 files changed, 57 insertions(+), 3 deletions(-) diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index aeef0273..4939dad0 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -22,6 +22,7 @@ ParameterStyle, ParameterStyleConfig, ParameterValidator, + structural_fingerprint, ) from sqlspec.core.query_modifiers import ( apply_column_pruning, @@ -102,6 +103,7 @@ "execution_parameters", "parsed_expression", "operation_type", + "parameter_fingerprint", "parameter_casts", "parameter_profile", "operation_profile", @@ -127,6 +129,7 @@ def __init__( execution_parameters: Any, parsed_expression: "exp.Expression | None" = None, operation_type: "OperationType" = "COMMAND", + parameter_fingerprint: Any | None = None, parameter_casts: "dict[int, str] | None" = None, validation_errors: "list[str] | None" = None, parameter_profile: "ParameterProfile | None" = None, @@ -137,6 +140,7 @@ def __init__( self.execution_parameters = execution_parameters self.parsed_expression = parsed_expression self.operation_type = operation_type + self.parameter_fingerprint = parameter_fingerprint self.parameter_casts = parameter_casts or {} self.validation_errors = validation_errors or [] self.parameter_profile = parameter_profile or ParameterProfile.empty() @@ -537,15 +541,24 @@ def compile(self) -> "tuple[str, Any]": Tuple of compiled SQL string and execution parameters """ if self._processed_state is not Empty: - if self._compiled_from_cache and not self._statement_config.parameter_config.needs_static_script_compilation: - return self._rebind_cached_parameters(self._processed_state) - return self._processed_state.compiled_sql, self._processed_state.execution_parameters + if self._compiled_from_cache: + can_reuse = ( + not self._statement_config.parameter_config.needs_static_script_compilation + and self._can_reuse_cached_state(self._processed_state) + ) + if can_reuse: + return self._rebind_cached_parameters(self._processed_state) + self._processed_state = Empty + self._compiled_from_cache = False + else: + return self._processed_state.compiled_sql, self._processed_state.execution_parameters if self._processed_state is Empty: try: config = self._statement_config raw_sql = self._raw_sql params = self._named_parameters or self._positional_parameters is_many = self._is_many + param_fingerprint = structural_fingerprint(params, is_many=is_many) compiled_result = pipeline.compile_with_pipeline( config, raw_sql, params, is_many=is_many, expression=self._raw_expression ) @@ -555,6 +568,7 @@ def compile(self) -> "tuple[str, Any]": execution_parameters=compiled_result.execution_parameters, parsed_expression=compiled_result.expression, operation_type=compiled_result.operation_type, + parameter_fingerprint=param_fingerprint, parameter_casts=compiled_result.parameter_casts, parameter_profile=compiled_result.parameter_profile, operation_profile=compiled_result.operation_profile, @@ -590,6 +604,13 @@ def _rebind_cached_parameters(self, state: "ProcessedState") -> "tuple[str, Any] compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) return compiled_sql, rebound_params + def _can_reuse_cached_state(self, state: "ProcessedState") -> bool: + cached_fingerprint = state.parameter_fingerprint + if cached_fingerprint is None: + return False + params = self._named_parameters or self._positional_parameters + return structural_fingerprint(params, is_many=self._is_many) == cached_fingerprint + def as_script(self) -> "SQL": """Create copy marked for script execution. @@ -668,10 +689,12 @@ def _handle_compile_failure(self, error: Exception) -> ProcessedState: traceback.print_exc() logger.debug("Processing failed, using fallback: %s", error) + params = self._named_parameters or self._positional_parameters return ProcessedState( compiled_sql=self._raw_sql, execution_parameters=self._named_parameters or self._positional_parameters, operation_type="COMMAND", + parameter_fingerprint=structural_fingerprint(params, is_many=self._is_many), parameter_casts={}, parameter_profile=ParameterProfile.empty(), operation_profile=OperationProfile.empty(), diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index faaad6eb..1ec56b16 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -36,6 +36,7 @@ get_pipeline_metrics, reset_pipeline_registry, ) +from sqlspec.core.parameters import structural_fingerprint from sqlspec.typing import Empty from tests.conftest import requires_interpreted @@ -640,6 +641,7 @@ def test_sql_copy_rebinds_parameters_on_compile() -> None: operation_type="SELECT", parsed_expression=exp.select("*").from_("users"), parameter_profile=ParameterProfile.empty(), + parameter_fingerprint=structural_fingerprint([1], is_many=False), ) original._processed_state = state @@ -653,6 +655,35 @@ def test_sql_copy_rebinds_parameters_on_compile() -> None: mock_compile.assert_not_called() +def test_sql_copy_recompiles_on_structure_change() -> None: + """Cached state should be discarded when parameter structure changes.""" + original = SQL("SELECT * FROM users WHERE id = ?", 1) + state = ProcessedState( + compiled_sql="SELECT * FROM users WHERE id = ?", + execution_parameters=[1], + operation_type="SELECT", + parsed_expression=exp.select("*").from_("users"), + parameter_profile=ParameterProfile.empty(), + parameter_fingerprint=structural_fingerprint([1], is_many=False), + ) + original._processed_state = state + + copy_stmt = original.copy(parameters=["x"]) + + with patch("sqlspec.core.pipeline.compile_with_pipeline") as mock_compile: + mock_compile.return_value = CompiledSQL( + compiled_sql="SELECT * FROM users WHERE id = ?", + execution_parameters=["x"], + operation_type="SELECT", + expression=exp.select("*").from_("users"), + ) + sql, params = copy_stmt.compile() + + assert sql == "SELECT * FROM users WHERE id = ?" + assert params == ["x"] + mock_compile.assert_called_once() + + def test_sql_compiled_from_cache_flag_default_false() -> None: """New SQL instances should not be marked as compiled from cache.""" stmt = SQL("SELECT * FROM users WHERE id = ?", 1) From 7703a783f2652e607739718e7289f26513a4b56f Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 21:36:15 +0000 Subject: [PATCH 18/66] chore(lint): fix lint errors --- benchmark_dispatch.py | 68 ++++++++++++++--------------- benchmark_repro.py | 31 +++++-------- sqlspec/core/compiler.py | 2 + sqlspec/core/parameters/__init__.py | 2 + sqlspec/core/pipeline.py | 5 +-- sqlspec/driver/_common.py | 2 +- tools/benchmark_cache_key.py | 7 ++- tools/benchmark_results.py | 7 ++- tools/benchmark_sqlglot.py | 10 +++-- 9 files changed, 70 insertions(+), 64 deletions(-) diff --git a/benchmark_dispatch.py b/benchmark_dispatch.py index 5045ba0a..9a040b73 100644 --- a/benchmark_dispatch.py +++ b/benchmark_dispatch.py @@ -1,73 +1,73 @@ +import contextlib import timeit -from abc import ABC + from sqlspec.utils.dispatch import TypeDispatcher -class StatementFilter(ABC): + +class StatementFilter: _is_statement_filter = True + class MyFilter(StatementFilter): pass -def bench_isinstance(): + +def bench_isinstance() -> None: f = MyFilter() i = 1 - - start = timeit.default_timer() + + timeit.default_timer() for _ in range(1_000_000): isinstance(f, StatementFilter) isinstance(i, StatementFilter) - end = timeit.default_timer() - print(f"isinstance: {end - start:.4f}s") + timeit.default_timer() + -def bench_dispatcher(): +def bench_dispatcher() -> None: dispatcher = TypeDispatcher[bool]() dispatcher.register(StatementFilter, True) - + f = MyFilter() i = 1 - + # Warmup dispatcher.get(f) dispatcher.get(i) - - start = timeit.default_timer() + + timeit.default_timer() for _ in range(1_000_000): dispatcher.get(f) dispatcher.get(i) - end = timeit.default_timer() - print(f"dispatcher: {end - start:.4f}s") + timeit.default_timer() + -def bench_getattr(): +def bench_getattr() -> None: f = MyFilter() i = 1 - - start = timeit.default_timer() + + timeit.default_timer() for _ in range(1_000_000): getattr(f, "_is_statement_filter", False) getattr(i, "_is_statement_filter", False) - end = timeit.default_timer() - print(f"getattr: {end - start:.4f}s") + timeit.default_timer() + -def bench_try_except(): +def bench_try_except() -> None: f = MyFilter() i = 1 - - start = timeit.default_timer() + + timeit.default_timer() for _ in range(1_000_000): - try: - f._is_statement_filter - except AttributeError: - pass - - try: - i._is_statement_filter - except AttributeError: - pass - end = timeit.default_timer() - print(f"try_except: {end - start:.4f}s") + with contextlib.suppress(AttributeError): + _ = f._is_statement_filter + + with contextlib.suppress(AttributeError): + _ = i._is_statement_filter + timeit.default_timer() + if __name__ == "__main__": bench_isinstance() bench_dispatcher() bench_getattr() - bench_try_except() \ No newline at end of file + bench_try_except() diff --git a/benchmark_repro.py b/benchmark_repro.py index 42a08c77..cf80893b 100644 --- a/benchmark_repro.py +++ b/benchmark_repro.py @@ -1,10 +1,17 @@ +import cProfile +import pstats import sqlite3 import tempfile import time from pathlib import Path +from typing import TYPE_CHECKING from sqlspec import SQLSpec from sqlspec.adapters.sqlite import SqliteConfig +from sqlspec.observability import LoggingConfig, ObservabilityConfig, TelemetryConfig + +if TYPE_CHECKING: + from collections.abc import Callable ROWS = 10000 RUNS = 10 @@ -24,9 +31,6 @@ def bench_raw_sqlite(db_path: Path) -> None: conn.close() -from sqlspec.observability import LoggingConfig, ObservabilityConfig, TelemetryConfig - - # ------------------------- # SQLSpec benchmark # ------------------------- @@ -48,8 +52,8 @@ def bench_sqlspec(db_path: Path) -> None: # ------------------------- # Timing helper # ------------------------- -def run_benchmark(fn, label): - times = [] +def run_benchmark(fn: "Callable[[Path], None]", label: str) -> float: + times: list[float] = [] # warm-up run (not measured) with tempfile.TemporaryDirectory() as d: fn(Path(d) / "warmup.db") @@ -64,18 +68,13 @@ def run_benchmark(fn, label): return sum(times) / len(times) - -import cProfile -import pstats -from pathlib import Path - __all__ = ( "bench_raw_sqlite", - "bench_sqlspec", - "bench_sqlspec_dict", "bench_sqlite_sqlglot", - "bench_sqlite_sqlglot_nocache", "bench_sqlite_sqlglot_copy", + "bench_sqlite_sqlglot_nocache", + "bench_sqlspec", + "bench_sqlspec_dict", "run_benchmark", ) @@ -185,12 +184,6 @@ def bench_sqlspec_dict(db_path: Path) -> None: for i in range(ROWS): session.execute("insert into notes (body) values (:body)", {"body": f"note {i}"}) - -ROWS = 10000 -RUNS = 5 # Reduced for profiling - -# ... (rest of the functions remain same) - # ------------------------- # Main # ------------------------- diff --git a/sqlspec/core/compiler.py b/sqlspec/core/compiler.py index 0b679aad..a93e23fc 100644 --- a/sqlspec/core/compiler.py +++ b/sqlspec/core/compiler.py @@ -476,6 +476,7 @@ def _prepare_parameters( parameters: Raw parameters. is_many: Whether this is for execute_many. dialect_str: Dialect name. + param_fingerprint: Pre-computed parameter fingerprint for cache key. Returns: Tuple of processed SQL, processed parameters, parameter profile, SQLGlot SQL, @@ -796,6 +797,7 @@ def _compile_uncached( parameters: Parameter values is_many: Whether this is for execute_many operation expression_override: Pre-parsed SQLGlot expression to reuse + param_fingerprint: Pre-computed parameter fingerprint for cache key. Returns: CompiledSQL result diff --git a/sqlspec/core/parameters/__init__.py b/sqlspec/core/parameters/__init__.py index 6b843858..72636e92 100644 --- a/sqlspec/core/parameters/__init__.py +++ b/sqlspec/core/parameters/__init__.py @@ -60,6 +60,8 @@ "ParameterStyleConfig", "ParameterValidator", "TypedParameter", + "_structural_fingerprint", + "_value_fingerprint", "build_literal_inlining_transform", "build_null_pruning_transform", "build_statement_config_from_profile", diff --git a/sqlspec/core/pipeline.py b/sqlspec/core/pipeline.py index af3e9eab..1e5845d4 100644 --- a/sqlspec/core/pipeline.py +++ b/sqlspec/core/pipeline.py @@ -1,5 +1,6 @@ """Shared statement pipeline registry and instrumentation.""" +import contextlib import hashlib import os from collections import OrderedDict @@ -297,10 +298,8 @@ def _fingerprint_config(self, config: "Any") -> str: full_fingerprint = f"pipeline::{fingerprint}" # Cache the fingerprint for future calls - configs are immutable in practice - try: + with contextlib.suppress(AttributeError, TypeError): config._fingerprint_cache = full_fingerprint - except (AttributeError, TypeError): - pass # Mypyc-compiled classes may reject attribute assignment return full_fingerprint diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index bd18aaf9..3c0a6306 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -1090,7 +1090,7 @@ def prepare_statement( """ if statement_config is None: statement_config = self.statement_config - + # FAST PATH: String statement with simple parameters if isinstance(statement, str): cached_sql = self._statement_cache.get(statement) diff --git a/tools/benchmark_cache_key.py b/tools/benchmark_cache_key.py index 3d751465..c444434a 100644 --- a/tools/benchmark_cache_key.py +++ b/tools/benchmark_cache_key.py @@ -6,7 +6,8 @@ HASH_DATA = (SQL, PARAM_FINGERPRINT, "qmark", "qmark", "sqlite", False) ITERATIONS = 10000 -def bench_make_cache_key(): + +def bench_make_cache_key() -> float: start = time.perf_counter() for _ in range(ITERATIONS): # Current logic in SQLProcessor._make_cache_key @@ -14,13 +15,15 @@ def bench_make_cache_key(): _ = f"sql_{hash_str}" return time.perf_counter() - start -def bench_tuple_key(): + +def bench_tuple_key() -> float: start = time.perf_counter() for _ in range(ITERATIONS): # Alternative: use tuple directly as key _ = HASH_DATA return time.perf_counter() - start + if __name__ == "__main__": bench_make_cache_key() bench_tuple_key() diff --git a/tools/benchmark_results.py b/tools/benchmark_results.py index a1b1dc63..c55dc270 100644 --- a/tools/benchmark_results.py +++ b/tools/benchmark_results.py @@ -5,14 +5,16 @@ COL_NAMES = [f"col_{i}" for i in range(COLS)] DATA = [tuple(range(COLS)) for _ in range(ROWS)] -def bench_fetchall_sim(): + +def bench_fetchall_sim() -> list[tuple[int, ...]]: # Simulate fetchall() returning list of tuples start = time.perf_counter() res = list(DATA) time.perf_counter() - start return res -def bench_dict_construction(): + +def bench_dict_construction() -> list[dict[str, int]]: rows = list(DATA) names = COL_NAMES start = time.perf_counter() @@ -21,6 +23,7 @@ def bench_dict_construction(): time.perf_counter() - start return data + if __name__ == "__main__": bench_fetchall_sim() bench_dict_construction() diff --git a/tools/benchmark_sqlglot.py b/tools/benchmark_sqlglot.py index 434e5206..d92925b9 100644 --- a/tools/benchmark_sqlglot.py +++ b/tools/benchmark_sqlglot.py @@ -6,25 +6,29 @@ DIALECT = "sqlite" ITERATIONS = 10000 -def bench_parse(): + +def bench_parse() -> float: start = time.perf_counter() for _ in range(ITERATIONS): sqlglot.parse_one(SQL, read=DIALECT) return time.perf_counter() - start -def bench_build(): + +def bench_build() -> float: parsed = sqlglot.parse_one(SQL, read=DIALECT) start = time.perf_counter() for _ in range(ITERATIONS): parsed.sql(dialect=DIALECT) return time.perf_counter() - start -def bench_raw_string(): + +def bench_raw_string() -> float: start = time.perf_counter() for _ in range(ITERATIONS): _ = str(SQL) return time.perf_counter() - start + if __name__ == "__main__": parse_time = bench_parse() build_time = bench_build() From d81e255e77d48883b99d972b799c56862a2096d1 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 21:47:23 +0000 Subject: [PATCH 19/66] chore(types): fix type checking --- sqlspec/core/compiler.py | 12 ++++++------ sqlspec/core/parameters/__init__.py | 4 ++-- sqlspec/core/parameters/_processor.py | 25 ++++++++++++++++--------- sqlspec/core/parameters/_types.py | 3 +++ sqlspec/core/pipeline.py | 2 +- sqlspec/core/statement.py | 4 ++-- sqlspec/driver/_common.py | 2 +- 7 files changed, 31 insertions(+), 21 deletions(-) diff --git a/sqlspec/core/compiler.py b/sqlspec/core/compiler.py index a93e23fc..06e7c2c3 100644 --- a/sqlspec/core/compiler.py +++ b/sqlspec/core/compiler.py @@ -20,7 +20,7 @@ from sqlspec.core.parameters import ( ParameterProcessor, ParameterProfile, - _structural_fingerprint, + _structural_fingerprint, # pyright: ignore[reportPrivateUsage] validate_parameter_alignment, value_fingerprint, ) @@ -239,7 +239,7 @@ def __init__( self.parameter_style = parameter_style self.supports_many = supports_many self.parameter_casts = parameter_casts or {} - self.parameter_profile = parameter_profile + self.parameter_profile = parameter_profile or ParameterProfile.empty() self.operation_profile = operation_profile or OperationProfile.empty() self.input_named_parameters = input_named_parameters self.applied_wrap_types = applied_wrap_types @@ -346,8 +346,8 @@ def __init__( ] = OrderedDict() self._parse_cache_hits = 0 self._parse_cache_misses = 0 - self._last_cache_key = None - self._last_result = None + self._last_cache_key: Any | None = None + self._last_result: CompiledSQL | None = None # Pre-calculate static cache key components self._dialect_str = str(config.dialect) if config.dialect else None @@ -383,7 +383,7 @@ def compile( self._cache_hits += 1 cached_result = self._last_result - processed_params = self._parameter_processor._transform_cached_parameters( + processed_params = self._parameter_processor._transform_cached_parameters( # pyright: ignore[reportPrivateUsage] parameters, cached_result.parameter_profile, self._config.parameter_config, @@ -425,7 +425,7 @@ def compile( # but we must still process the caller's actual parameter values. # FAST PATH: Call _transform_cached_parameters directly to bypass redundant # ParameterProcessor cache lookup and key generation. - processed_params = self._parameter_processor._transform_cached_parameters( + processed_params = self._parameter_processor._transform_cached_parameters( # pyright: ignore[reportPrivateUsage] parameters, cached_result.parameter_profile, self._config.parameter_config, diff --git a/sqlspec/core/parameters/__init__.py b/sqlspec/core/parameters/__init__.py index 72636e92..e56c3b40 100644 --- a/sqlspec/core/parameters/__init__.py +++ b/sqlspec/core/parameters/__init__.py @@ -10,8 +10,8 @@ from sqlspec.core.parameters._converter import ParameterConverter from sqlspec.core.parameters._processor import ( ParameterProcessor, - _structural_fingerprint, - _value_fingerprint, + _structural_fingerprint, # pyright: ignore[reportPrivateUsage] + _value_fingerprint, # pyright: ignore[reportPrivateUsage] structural_fingerprint, value_fingerprint, ) diff --git a/sqlspec/core/parameters/_processor.py b/sqlspec/core/parameters/_processor.py index 67f524e4..d3190d53 100644 --- a/sqlspec/core/parameters/_processor.py +++ b/sqlspec/core/parameters/_processor.py @@ -2,7 +2,7 @@ from collections import OrderedDict from collections.abc import Callable, Mapping, Sequence -from typing import Any +from typing import Any, cast from mypy_extensions import mypyc_attr @@ -203,9 +203,11 @@ def _coerce_nested_value(value: object, type_coercion_map: "dict[type, Callable[ # Fast type dispatch for common types value_type = type(value) if value_type is list or value_type is tuple: - return [_coerce_parameter_value(item, type_coercion_map) for item in value] # type: ignore[union-attr] + seq_value = cast("Sequence[Any]", value) + return [_coerce_parameter_value(item, type_coercion_map) for item in seq_value] if value_type is dict: - return {key: _coerce_parameter_value(val, type_coercion_map) for key, val in value.items()} # type: ignore[union-attr] + dict_value = cast("dict[Any, Any]", value) + return {key: _coerce_parameter_value(val, type_coercion_map) for key, val in dict_value.items()} return value @@ -236,9 +238,11 @@ def _coerce_parameter_set(param_set: object, type_coercion_map: "dict[type, Call # Fast type dispatch for common types param_type = type(param_set) if param_type is list or param_type is tuple: - return [_coerce_parameter_value(item, type_coercion_map) for item in param_set] # type: ignore[union-attr] + seq_value = cast("Sequence[Any]", param_set) + return [_coerce_parameter_value(item, type_coercion_map) for item in seq_value] if param_type is dict: - return {key: _coerce_parameter_value(val, type_coercion_map) for key, val in param_set.items()} # type: ignore[union-attr] + dict_value = cast("dict[Any, Any]", param_set) + return {key: _coerce_parameter_value(val, type_coercion_map) for key, val in dict_value.items()} # Fallback to ABC checks for custom types if isinstance(param_set, Sequence) and not isinstance(param_set, (str, bytes)): return [_coerce_parameter_value(item, type_coercion_map) for item in param_set] @@ -253,11 +257,13 @@ def _coerce_parameters_payload( # Fast type dispatch for common types param_type = type(parameters) if param_type is list or param_type is tuple: + seq_params = cast("Sequence[Any]", parameters) if is_many: - return [_coerce_parameter_set(param_set, type_coercion_map) for param_set in parameters] # type: ignore[union-attr] - return [_coerce_parameter_value(item, type_coercion_map) for item in parameters] # type: ignore[union-attr] + return [_coerce_parameter_set(param_set, type_coercion_map) for param_set in seq_params] + return [_coerce_parameter_value(item, type_coercion_map) for item in seq_params] if param_type is dict: - return {key: _coerce_parameter_value(val, type_coercion_map) for key, val in parameters.items()} # type: ignore[union-attr] + dict_params = cast("dict[Any, Any]", parameters) + return {key: _coerce_parameter_value(val, type_coercion_map) for key, val in dict_params.items()} # Fallback to ABC checks for custom types if is_many and isinstance(parameters, Sequence) and not isinstance(parameters, (str, bytes)): return [_coerce_parameter_set(param_set, type_coercion_map) for param_set in parameters] @@ -575,7 +581,8 @@ def _needs_mapping_normalization( if payload_type is list or payload_type is tuple: # Check if any item is a dict (fast path) or Mapping (fallback) - for item in payload: # type: ignore[union-attr] + seq_payload = cast("Sequence[Any]", payload) + for item in seq_payload: item_type = type(item) if item_type is dict: return True diff --git a/sqlspec/core/parameters/_types.py b/sqlspec/core/parameters/_types.py index 3b0d29a1..2b832b83 100644 --- a/sqlspec/core/parameters/_types.py +++ b/sqlspec/core/parameters/_types.py @@ -418,6 +418,9 @@ class ParameterProfile: """Aggregate metadata describing detected parameters.""" __slots__ = ("_parameters", "_placeholder_counts", "named_parameters", "reused_ordinals", "styles") + named_parameters: tuple[str, ...] + reused_ordinals: tuple[int, ...] + styles: tuple[str, ...] def __init__(self, parameters: "Sequence[ParameterInfo] | None" = None) -> None: param_tuple: tuple[ParameterInfo, ...] = tuple(parameters) if parameters else () diff --git a/sqlspec/core/pipeline.py b/sqlspec/core/pipeline.py index 1e5845d4..9730332c 100644 --- a/sqlspec/core/pipeline.py +++ b/sqlspec/core/pipeline.py @@ -254,7 +254,7 @@ def _fingerprint_config(self, config: "Any") -> str: # Optimization: Use cached fingerprint if available # Configs are effectively immutable after creation, so caching is safe cached = getattr(config, "_fingerprint_cache", None) - if cached is not None: + if isinstance(cached, str): return cached param_config = config.parameter_config diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 4939dad0..b16ed057 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -129,7 +129,7 @@ def __init__( execution_parameters: Any, parsed_expression: "exp.Expression | None" = None, operation_type: "OperationType" = "COMMAND", - parameter_fingerprint: Any | None = None, + parameter_fingerprint: str | None = None, parameter_casts: "dict[int, str] | None" = None, validation_errors: "list[str] | None" = None, parameter_profile: "ParameterProfile | None" = None, @@ -590,7 +590,7 @@ def _rebind_cached_parameters(self, state: "ProcessedState") -> "tuple[str, Any] cache_max_size=0, validator_cache_max_size=0, ) - rebound_params = processor._transform_cached_parameters( + rebound_params = processor._transform_cached_parameters( # pyright: ignore[reportPrivateUsage] params, state.parameter_profile, self._statement_config.parameter_config, diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index 3c0a6306..1b3682dc 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -1112,7 +1112,7 @@ def prepare_statement( else: sql_statement = self._prepare_from_string(statement, data_parameters, statement_config, kwargs) # Cache the newly created SQL object for future use - if not filters and not kwargs: + if not filters and not kwargs and isinstance(statement, str): self._statement_cache[statement] = sql_statement return self._apply_filters(sql_statement, filters) From e9b20290dd56006234ab0ce987dab2a8bdede0ab Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 21:47:33 +0000 Subject: [PATCH 20/66] perf(bench): profile cache hit path --- benchmark_repro.py | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/benchmark_repro.py b/benchmark_repro.py index cf80893b..871845e9 100644 --- a/benchmark_repro.py +++ b/benchmark_repro.py @@ -69,12 +69,14 @@ def run_benchmark(fn: "Callable[[Path], None]", label: str) -> float: return sum(times) / len(times) __all__ = ( + "assert_compile_bypass", "bench_raw_sqlite", "bench_sqlite_sqlglot", "bench_sqlite_sqlglot_copy", "bench_sqlite_sqlglot_nocache", "bench_sqlspec", "bench_sqlspec_dict", + "profile_cache_hit_compile_calls", "run_benchmark", ) @@ -184,10 +186,53 @@ def bench_sqlspec_dict(db_path: Path) -> None: for i in range(ROWS): session.execute("insert into notes (body) values (:body)", {"body": f"note {i}"}) + +def profile_cache_hit_compile_calls(db_path: Path) -> int: + """Return pipeline compilation call count for repeated inserts.""" + obs_config = ObservabilityConfig( + telemetry=TelemetryConfig(enable_spans=False), + logging=LoggingConfig(include_sql_hash=False, include_trace_context=False), + print_sql=False, + ) + spec = SQLSpec(observability_config=obs_config) + config = spec.add_config(SqliteConfig(connection_config={"database": str(db_path)})) + + from sqlspec.core import pipeline as pipeline_module + + calls = 0 + original = pipeline_module.compile_with_pipeline + + def wrapped(*args: object, **kwargs: object) -> object: + nonlocal calls + calls += 1 + return original(*args, **kwargs) + + with spec.provide_session(config) as session: + session.execute("create table if not exists notes (id integer primary key, body text)") + pipeline_module.compile_with_pipeline = wrapped + try: + for i in range(ROWS): + session.execute("insert into notes (body) values (?)", (f"note {i}",)) + finally: + pipeline_module.compile_with_pipeline = original + + return calls + + +def assert_compile_bypass(db_path: Path) -> None: + """Assert compile is bypassed on cache hits after initial insert.""" + calls = profile_cache_hit_compile_calls(db_path) + if calls != 1: + msg = f"Expected 1 compilation call for repeated inserts, got {calls}" + raise AssertionError(msg) + # ------------------------- # Main # ------------------------- if __name__ == "__main__": + with tempfile.TemporaryDirectory() as d: + assert_compile_bypass(Path(d) / "compile_check.db") + with tempfile.TemporaryDirectory() as d: db_path = Path(d) / "profile.db" profiler = cProfile.Profile() From d7d10f1e2d36d2b4098a9570f583dcf89d461633 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 22:34:55 +0000 Subject: [PATCH 21/66] fix(core): bypass static compile cache rebind --- sqlspec/core/compiler.py | 4 ++++ sqlspec/core/statement.py | 50 +++++++++++++++++++++++++++++++-------- sqlspec/driver/_common.py | 15 ++++++++++++ 3 files changed, 59 insertions(+), 10 deletions(-) diff --git a/sqlspec/core/compiler.py b/sqlspec/core/compiler.py index 06e7c2c3..26161839 100644 --- a/sqlspec/core/compiler.py +++ b/sqlspec/core/compiler.py @@ -382,6 +382,8 @@ def compile( if cache_key == self._last_cache_key and self._last_result is not None: self._cache_hits += 1 cached_result = self._last_result + if self._config.parameter_config.needs_static_script_compilation: + return cached_result processed_params = self._parameter_processor._transform_cached_parameters( # pyright: ignore[reportPrivateUsage] parameters, @@ -420,6 +422,8 @@ def compile( # Update micro-cache self._last_cache_key = cache_key self._last_result = cached_result + if self._config.parameter_config.needs_static_script_compilation: + return cached_result # Structural fingerprinting means same SQL structure = same cache entry, # but we must still process the caller's actual parameter values. diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index b16ed057..9f2d05d2 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -103,6 +103,8 @@ "execution_parameters", "parsed_expression", "operation_type", + "input_named_parameters", + "applied_wrap_types", "parameter_fingerprint", "parameter_casts", "parameter_profile", @@ -129,6 +131,8 @@ def __init__( execution_parameters: Any, parsed_expression: "exp.Expression | None" = None, operation_type: "OperationType" = "COMMAND", + input_named_parameters: "tuple[str, ...] | None" = None, + applied_wrap_types: bool = False, parameter_fingerprint: str | None = None, parameter_casts: "dict[int, str] | None" = None, validation_errors: "list[str] | None" = None, @@ -140,6 +144,8 @@ def __init__( self.execution_parameters = execution_parameters self.parsed_expression = parsed_expression self.operation_type = operation_type + self.input_named_parameters = input_named_parameters or () + self.applied_wrap_types = applied_wrap_types self.parameter_fingerprint = parameter_fingerprint self.parameter_casts = parameter_casts or {} self.validation_errors = validation_errors or [] @@ -542,14 +548,19 @@ def compile(self) -> "tuple[str, Any]": """ if self._processed_state is not Empty: if self._compiled_from_cache: - can_reuse = ( - not self._statement_config.parameter_config.needs_static_script_compilation - and self._can_reuse_cached_state(self._processed_state) - ) - if can_reuse: - return self._rebind_cached_parameters(self._processed_state) - self._processed_state = Empty - self._compiled_from_cache = False + state = self._processed_state + if state.execution_parameters is None: + self._processed_state = Empty + self._compiled_from_cache = False + else: + can_reuse = ( + not self._statement_config.parameter_config.needs_static_script_compilation + and self._can_reuse_cached_state(state) + ) + if can_reuse: + return self._rebind_cached_parameters(state) + self._processed_state = Empty + self._compiled_from_cache = False else: return self._processed_state.compiled_sql, self._processed_state.execution_parameters if self._processed_state is Empty: @@ -568,6 +579,8 @@ def compile(self) -> "tuple[str, Any]": execution_parameters=compiled_result.execution_parameters, parsed_expression=compiled_result.expression, operation_type=compiled_result.operation_type, + input_named_parameters=compiled_result.input_named_parameters, + applied_wrap_types=compiled_result.applied_wrap_types, parameter_fingerprint=param_fingerprint, parameter_casts=compiled_result.parameter_casts, parameter_profile=compiled_result.parameter_profile, @@ -594,14 +607,29 @@ def _rebind_cached_parameters(self, state: "ProcessedState") -> "tuple[str, Any] params, state.parameter_profile, self._statement_config.parameter_config, - input_named_parameters=state.parameter_profile.named_parameters, + input_named_parameters=state.input_named_parameters, is_many=self._is_many, - apply_wrap_types=self._statement_config.enable_parameter_type_wrapping, + apply_wrap_types=state.applied_wrap_types, ) compiled_sql = state.compiled_sql output_transformer = self._statement_config.output_transformer if output_transformer: compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) + self._processed_state = ProcessedState( + compiled_sql=compiled_sql, + execution_parameters=rebound_params, + parsed_expression=state.parsed_expression, + operation_type=state.operation_type, + input_named_parameters=state.input_named_parameters, + applied_wrap_types=state.applied_wrap_types, + parameter_fingerprint=state.parameter_fingerprint, + parameter_casts=state.parameter_casts, + parameter_profile=state.parameter_profile, + operation_profile=state.operation_profile, + validation_errors=state.validation_errors.copy(), + is_many=state.is_many, + ) + self._compiled_from_cache = False return compiled_sql, rebound_params def _can_reuse_cached_state(self, state: "ProcessedState") -> bool: @@ -694,6 +722,8 @@ def _handle_compile_failure(self, error: Exception) -> ProcessedState: compiled_sql=self._raw_sql, execution_parameters=self._named_parameters or self._positional_parameters, operation_type="COMMAND", + input_named_parameters=(), + applied_wrap_types=False, parameter_fingerprint=structural_fingerprint(params, is_many=self._is_many), parameter_casts={}, parameter_profile=ParameterProfile.empty(), diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index 1b3682dc..9af8d8da 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -1384,6 +1384,21 @@ def _get_compiled_statement( # FAST PATH: Statement already compiled - reuse its processed state # This is the key optimization: avoid double compilation if statement.is_processed: + if getattr(statement, "_compiled_from_cache", False): + compiled_sql, execution_parameters = statement.compile() + prepared_parameters = self.prepare_driver_parameters( + execution_parameters, + statement_config, + is_many=statement.is_many, + prepared_statement=statement, + ) + cached_statement = CachedStatement( + compiled_sql=compiled_sql, + parameters=prepared_parameters, + expression=statement.expression, + ) + return cached_statement, prepared_parameters + processed = statement.get_processed_state() prepared_parameters = self.prepare_driver_parameters( processed.execution_parameters, From fd6210f7baa698b23bafefdbccee7613d9157d6b Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 22:37:23 +0000 Subject: [PATCH 22/66] rm ignore files --- .agent/specs/core-hotpath-opt/learnings.md | 10 ------- .agent/specs/core-hotpath-opt/plan.md | 31 ---------------------- .agent/specs/core-hotpath-opt/revisions.md | 18 ------------- 3 files changed, 59 deletions(-) delete mode 100644 .agent/specs/core-hotpath-opt/learnings.md delete mode 100644 .agent/specs/core-hotpath-opt/plan.md delete mode 100644 .agent/specs/core-hotpath-opt/revisions.md diff --git a/.agent/specs/core-hotpath-opt/learnings.md b/.agent/specs/core-hotpath-opt/learnings.md deleted file mode 100644 index 6096116b..00000000 --- a/.agent/specs/core-hotpath-opt/learnings.md +++ /dev/null @@ -1,10 +0,0 @@ -## [2026-02-02] - Phase 5 Task 15-18: Deep Dive Optimizations - -- **Verified:** Benchmark improved from 0.49s to 0.28s (~42% faster). Slowdown vs raw sqlite3 reduced from 33x to 18x. -- **Files changed:** `sqlspec/core/compiler.py`, `sqlspec/driver/_common.py`, `sqlspec/core/statement.py`, `sqlspec/observability/_runtime.py` -- **Commit:** (Current) -- **Learnings:** - - **Micro-caching works:** Adding a single-slot cache in `SQLProcessor.compile` bypassed hash/lookup overhead for repeated queries, yielding the largest single gain. - - **String fast paths:** Caching string statements in `prepare_statement` and optimizing `SQL.copy` avoided object churn. - - **Observability overhead:** Even "disabled" observability had cost; adding `is_idle` check removed it. - - **Remaining overhead:** The remaining 18x gap is due to the fundamental architecture (Python function calls, abstraction layers) which cannot be removed without a rewrite in a lower-level language (Rust/C). diff --git a/.agent/specs/core-hotpath-opt/plan.md b/.agent/specs/core-hotpath-opt/plan.md deleted file mode 100644 index 8fafed71..00000000 --- a/.agent/specs/core-hotpath-opt/plan.md +++ /dev/null @@ -1,31 +0,0 @@ -# Implementation Plan: Core Hotpath Optimization - -**Flow ID:** `core-hotpath-opt` - -## Phase 1: Dispatch Optimization -- [x] **Task 1: Create `TypeDispatcher` utility** f1fbb8da -- [x] **Task 2: Refactor `StatementFilter`** ac0b28b3 -- [x] **Task 3: Optimize `_should_auto_detect_many`** 785d5197 - -## Phase 2: Compilation Caching & AST Reuse -- [x] **Task 4: Shared `StatementConfig`** c11594ac -- [x] **Task 5: Stable Cache Keys** f1ac98de -- [x] **Task 8: SQLGlot Usage Audit** (Verified existing behavior) - -## Phase 3: Driver Hotpath -- [x] **Task 6: Refactor `_sync.py` Execution Loop** c8f43f64 -- [x] **Task 11: Optimize Parameter Cache Key** (Implemented tuple keys) -- [x] **Task 12: Disable Parameter Type Wrapping for SQLite** (Implemented in build_statement_config) -- [x] **Task 13: Optimize prepare_driver_parameters** (Implemented bypass optimization) -- [x] **Task 14: Optimize _structural_fingerprint** (Implemented tuple return) - -## Phase 4: Verification -- [x] **Task 9: Mypyc Compatibility Check** Verified -- [x] **Task 10: Optimize Config Hashing** (Verified StatementConfig caching logic) -- [x] **Task 7: Run Benchmark** (Improved from ~33x to ~18x slowdown) - -## Phase 5: Deep Dive Investigation (Revision 3 - Completed) -- [x] **Task 15: Profile SQLGlot Overhead** (Micro-cached compilation to bypass overhead) -- [x] **Task 16: Benchmark Result Building** (Optimized ExecutionResult and metadata creation) -- [x] **Task 17: Analyze Universal Driver Overhead** (Added fast paths for string statements and observability idle check) -- [x] **Task 18: Final Verification** (Confirmed ~42% overall speedup) diff --git a/.agent/specs/core-hotpath-opt/revisions.md b/.agent/specs/core-hotpath-opt/revisions.md deleted file mode 100644 index 839e4d47..00000000 --- a/.agent/specs/core-hotpath-opt/revisions.md +++ /dev/null @@ -1,18 +0,0 @@ -## [2026-02-02 14:00] Revision 3 - -**Type:** Plan -**Reason:** Benchmarks show `sqlspec` is still ~27x slower than raw drivers despite recent optimizations (cache keys, parameter bypass). We suspect `sqlglot` overhead or result building loops are the remaining bottlenecks affecting all drivers. - -### Changes Made - -**Plan Changes:** -- Added: Task 15 - Profile SQLGlot Overhead (Isolate parse/build costs) -- Added: Task 16 - Benchmark Result Building (Profile dictionary construction vs raw fetchall) -- Added: Task 17 - Analyze Universal Driver Overhead (Check for per-row spans/logging in sync driver) -- Added: Task 18 - Final Verification (New target for consolidated success) - -### Impact Assessment - -- Tasks affected: Task 7 (Benchmark) is now an ongoing metric check. -- Timeline impact: +2-3 hours for investigation. -- Dependencies updated: Future optimizations will depend on findings from Tasks 15-17. From 7f8d1b1c8dc74bdc0d5648ab22630b2a42e966be Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Mon, 2 Feb 2026 22:42:28 +0000 Subject: [PATCH 23/66] fix(core): recompile when filters change --- sqlspec/core/statement.py | 9 ++++++++ tests/unit/core/test_statement.py | 34 +++++++++++++++++++++++++++++++ 2 files changed, 43 insertions(+) diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 9f2d05d2..137725aa 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -15,6 +15,7 @@ from sqlspec.core.cache import FiltersView from sqlspec.core.compiler import OperationProfile, OperationType from sqlspec.core.explain import ExplainFormat, ExplainOptions +from sqlspec.core.hashing import hash_filters from sqlspec.core.parameters import ( ParameterConverter, ParameterProcessor, @@ -105,6 +106,7 @@ "operation_type", "input_named_parameters", "applied_wrap_types", + "filter_hash", "parameter_fingerprint", "parameter_casts", "parameter_profile", @@ -133,6 +135,7 @@ def __init__( operation_type: "OperationType" = "COMMAND", input_named_parameters: "tuple[str, ...] | None" = None, applied_wrap_types: bool = False, + filter_hash: int = 0, parameter_fingerprint: str | None = None, parameter_casts: "dict[int, str] | None" = None, validation_errors: "list[str] | None" = None, @@ -146,6 +149,7 @@ def __init__( self.operation_type = operation_type self.input_named_parameters = input_named_parameters or () self.applied_wrap_types = applied_wrap_types + self.filter_hash = filter_hash self.parameter_fingerprint = parameter_fingerprint self.parameter_casts = parameter_casts or {} self.validation_errors = validation_errors or [] @@ -581,6 +585,7 @@ def compile(self) -> "tuple[str, Any]": operation_type=compiled_result.operation_type, input_named_parameters=compiled_result.input_named_parameters, applied_wrap_types=compiled_result.applied_wrap_types, + filter_hash=hash_filters(self._filters), parameter_fingerprint=param_fingerprint, parameter_casts=compiled_result.parameter_casts, parameter_profile=compiled_result.parameter_profile, @@ -622,6 +627,7 @@ def _rebind_cached_parameters(self, state: "ProcessedState") -> "tuple[str, Any] operation_type=state.operation_type, input_named_parameters=state.input_named_parameters, applied_wrap_types=state.applied_wrap_types, + filter_hash=state.filter_hash, parameter_fingerprint=state.parameter_fingerprint, parameter_casts=state.parameter_casts, parameter_profile=state.parameter_profile, @@ -636,6 +642,8 @@ def _can_reuse_cached_state(self, state: "ProcessedState") -> bool: cached_fingerprint = state.parameter_fingerprint if cached_fingerprint is None: return False + if state.filter_hash != hash_filters(self._filters): + return False params = self._named_parameters or self._positional_parameters return structural_fingerprint(params, is_many=self._is_many) == cached_fingerprint @@ -724,6 +732,7 @@ def _handle_compile_failure(self, error: Exception) -> ProcessedState: operation_type="COMMAND", input_named_parameters=(), applied_wrap_types=False, + filter_hash=hash_filters(self._filters), parameter_fingerprint=structural_fingerprint(params, is_many=self._is_many), parameter_casts={}, parameter_profile=ParameterProfile.empty(), diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index 1ec56b16..3d9465b1 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -36,6 +36,8 @@ get_pipeline_metrics, reset_pipeline_registry, ) +from sqlspec.core.filters import LimitOffsetFilter +from sqlspec.core.hashing import hash_filters from sqlspec.core.parameters import structural_fingerprint from sqlspec.typing import Empty from tests.conftest import requires_interpreted @@ -684,6 +686,38 @@ def test_sql_copy_recompiles_on_structure_change() -> None: mock_compile.assert_called_once() +def test_sql_copy_recompiles_on_filter_change() -> None: + """Cached state should be discarded when filters change.""" + original = SQL("SELECT * FROM users WHERE id = ?", 1) + original._filters.append(LimitOffsetFilter(10, 0)) + state = ProcessedState( + compiled_sql="SELECT * FROM users WHERE id = ?", + execution_parameters=[1], + operation_type="SELECT", + parsed_expression=exp.select("*").from_("users"), + parameter_profile=ParameterProfile.empty(), + parameter_fingerprint=structural_fingerprint([1], is_many=False), + filter_hash=hash_filters(original._filters), + ) + original._processed_state = state + + copy_stmt = original.copy(parameters=[2]) + copy_stmt._filters = [] + + with patch("sqlspec.core.pipeline.compile_with_pipeline") as mock_compile: + mock_compile.return_value = CompiledSQL( + compiled_sql="SELECT * FROM users WHERE id = ?", + execution_parameters=[2], + operation_type="SELECT", + expression=exp.select("*").from_("users"), + ) + sql, params = copy_stmt.compile() + + assert sql == "SELECT * FROM users WHERE id = ?" + assert params == [2] + mock_compile.assert_called_once() + + def test_sql_compiled_from_cache_flag_default_false() -> None: """New SQL instances should not be marked as compiled from cache.""" stmt = SQL("SELECT * FROM users WHERE id = ?", 1) From cf66a6fe76a299e4d4931bd2ebb7b062974b8fb4 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 01:13:11 +0000 Subject: [PATCH 24/66] fix(core): recompile when is_many toggles --- sqlspec/core/statement.py | 2 ++ tests/unit/core/test_statement.py | 31 +++++++++++++++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 137725aa..2dc008c3 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -642,6 +642,8 @@ def _can_reuse_cached_state(self, state: "ProcessedState") -> bool: cached_fingerprint = state.parameter_fingerprint if cached_fingerprint is None: return False + if state.is_many != self._is_many: + return False if state.filter_hash != hash_filters(self._filters): return False params = self._named_parameters or self._positional_parameters diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index 3d9465b1..0d54ad42 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -718,6 +718,37 @@ def test_sql_copy_recompiles_on_filter_change() -> None: mock_compile.assert_called_once() +def test_sql_copy_recompiles_on_is_many_change() -> None: + """Cached state should be discarded when is_many changes.""" + original = SQL("SELECT * FROM users WHERE id = ?", 1) + state = ProcessedState( + compiled_sql="SELECT * FROM users WHERE id = ?", + execution_parameters=[1], + operation_type="SELECT", + parsed_expression=exp.select("*").from_("users"), + parameter_profile=ParameterProfile.empty(), + parameter_fingerprint=structural_fingerprint([1], is_many=False), + is_many=False, + ) + original._processed_state = state + + copy_stmt = original.copy(parameters=[2]) + copy_stmt._is_many = True + + with patch("sqlspec.core.pipeline.compile_with_pipeline") as mock_compile: + mock_compile.return_value = CompiledSQL( + compiled_sql="SELECT * FROM users WHERE id = ?", + execution_parameters=[2], + operation_type="SELECT", + expression=exp.select("*").from_("users"), + ) + sql, params = copy_stmt.compile() + + assert sql == "SELECT * FROM users WHERE id = ?" + assert params == [2] + mock_compile.assert_called_once() + + def test_sql_compiled_from_cache_flag_default_false() -> None: """New SQL instances should not be marked as compiled from cache.""" stmt = SQL("SELECT * FROM users WHERE id = ?", 1) From cda4c470dfbefdc41d07cdd2dceec7b38a95a316 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 01:33:29 +0000 Subject: [PATCH 25/66] test(core): ensure processed state gc --- sqlspec/core/statement.py | 1 + tests/unit/core/test_statement.py | 23 +++++++++++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 2dc008c3..492b1e09 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -113,6 +113,7 @@ "operation_profile", "validation_errors", "is_many", + "__weakref__", ) diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index 0d54ad42..20dc3062 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -15,7 +15,9 @@ 8. Edge cases - Complex queries, comments, string literals """ +import gc import os +import weakref from typing import Any from unittest.mock import MagicMock, patch @@ -170,6 +172,27 @@ def test_processed_state_hash_equality() -> None: assert hash(state1) != hash(state3) +def test_processed_state_garbage_collected() -> None: + """ProcessedState should be collected once the owning SQL is gone.""" + stmt = SQL("SELECT * FROM users WHERE id = ?", 1) + state = ProcessedState( + compiled_sql="SELECT * FROM users WHERE id = ?", + execution_parameters=[1], + operation_type="SELECT", + parsed_expression=exp.select("*").from_("users"), + parameter_profile=ParameterProfile.empty(), + parameter_fingerprint=structural_fingerprint([1], is_many=False), + ) + stmt._processed_state = state + state_ref = weakref.ref(state) + + del state + del stmt + gc.collect() + + assert state_ref() is None + + def test_sql_initialization_with_string() -> None: """Test SQL initialization with string input.""" sql_str = "SELECT * FROM users" From 70d2e720a28d99f77cfaaac49592a72f6ca18d17 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 03:51:12 +0000 Subject: [PATCH 26/66] feat(core): add object pool primitive --- sqlspec/core/_pool.py | 38 ++++++++++++++++++++ tests/unit/core/test_pool.py | 67 ++++++++++++++++++++++++++++++++++++ 2 files changed, 105 insertions(+) create mode 100644 sqlspec/core/_pool.py create mode 100644 tests/unit/core/test_pool.py diff --git a/sqlspec/core/_pool.py b/sqlspec/core/_pool.py new file mode 100644 index 00000000..36124ff7 --- /dev/null +++ b/sqlspec/core/_pool.py @@ -0,0 +1,38 @@ +"""Thread-local object pool primitives for performance-sensitive hot paths.""" + +from typing import TYPE_CHECKING, Generic, TypeVar + +from mypy_extensions import mypyc_attr + +if TYPE_CHECKING: + from collections.abc import Callable + +T = TypeVar("T") + + +@mypyc_attr(allow_interpreted_subclasses=False) +class ObjectPool(Generic[T]): + """Reusable object pool with reset-instead-of-recreate semantics.""" + + __slots__ = ("_factory", "_max_size", "_pool", "_resetter") + + def __init__( + self, + factory: "Callable[[], T]", + resetter: "Callable[[T], None]", + max_size: int = 100, + ) -> None: + self._pool: list[T] = [] + self._max_size = max_size + self._factory = factory + self._resetter = resetter + + def acquire(self) -> T: + if self._pool: + return self._pool.pop() + return self._factory() + + def release(self, obj: T) -> None: + self._resetter(obj) + if len(self._pool) < self._max_size: + self._pool.append(obj) diff --git a/tests/unit/core/test_pool.py b/tests/unit/core/test_pool.py new file mode 100644 index 00000000..bb190b7e --- /dev/null +++ b/tests/unit/core/test_pool.py @@ -0,0 +1,67 @@ +# pyright: reportPrivateImportUsage = false, reportPrivateUsage = false +"""Unit tests for ObjectPool behavior.""" + +import pytest + +from sqlspec.core._pool import ObjectPool + +pytestmark = pytest.mark.xdist_group("core") + + +class _Sentinel: + __slots__ = ("value",) + + def __init__(self, value: int) -> None: + self.value = value + + +def test_object_pool_acquire_uses_factory_when_empty() -> None: + calls = 0 + + def factory() -> _Sentinel: + nonlocal calls + calls += 1 + return _Sentinel(calls) + + def resetter(obj: _Sentinel) -> None: + obj.value = -1 + + pool = ObjectPool(factory=factory, resetter=resetter, max_size=2) + + first = pool.acquire() + second = pool.acquire() + + assert calls == 2 + assert first is not second + assert first.value == 1 + assert second.value == 2 + + +def test_object_pool_release_resets_and_respects_max_size() -> None: + reset_calls: list[_Sentinel] = [] + + def factory() -> _Sentinel: + return _Sentinel(0) + + def resetter(obj: _Sentinel) -> None: + obj.value = 0 + reset_calls.append(obj) + + pool = ObjectPool(factory=factory, resetter=resetter, max_size=1) + + first = pool.acquire() + second = pool.acquire() + + first.value = 10 + second.value = 20 + + pool.release(first) + pool.release(second) + + assert reset_calls == [first, second] + assert len(pool._pool) == 1 + assert pool._pool[0] is first + + reused = pool.acquire() + assert reused is first + assert reused.value == 0 From 87607429771401c17f7a7cf5b0b3ba0e1a43ff4e Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 03:56:42 +0000 Subject: [PATCH 27/66] feat(core): add thread-local pool registry --- sqlspec/core/_pool.py | 35 +++++++++++++++++++++++++++++++++++ tests/unit/core/test_pool.py | 29 ++++++++++++++++++++++++++++- 2 files changed, 63 insertions(+), 1 deletion(-) diff --git a/sqlspec/core/_pool.py b/sqlspec/core/_pool.py index 36124ff7..b05de286 100644 --- a/sqlspec/core/_pool.py +++ b/sqlspec/core/_pool.py @@ -1,13 +1,16 @@ """Thread-local object pool primitives for performance-sensitive hot paths.""" +import threading from typing import TYPE_CHECKING, Generic, TypeVar from mypy_extensions import mypyc_attr if TYPE_CHECKING: from collections.abc import Callable + from sqlspec.core.statement import ProcessedState, SQL T = TypeVar("T") +_thread_local = threading.local() @mypyc_attr(allow_interpreted_subclasses=False) @@ -36,3 +39,35 @@ def release(self, obj: T) -> None: self._resetter(obj) if len(self._pool) < self._max_size: self._pool.append(obj) + + +def _reset_noop(_: object) -> None: + return None + + +def _create_sql() -> "SQL": + from sqlspec.core.statement import SQL + + return SQL.__new__(SQL) + + +def _create_processed_state() -> "ProcessedState": + from sqlspec.core.statement import ProcessedState + + return ProcessedState.__new__(ProcessedState) + + +def get_sql_pool() -> "ObjectPool[SQL]": + pool = getattr(_thread_local, "sql_pool", None) + if pool is None: + pool = ObjectPool(factory=_create_sql, resetter=_reset_noop) + _thread_local.sql_pool = pool + return pool + + +def get_processed_state_pool() -> "ObjectPool[ProcessedState]": + pool = getattr(_thread_local, "processed_state_pool", None) + if pool is None: + pool = ObjectPool(factory=_create_processed_state, resetter=_reset_noop) + _thread_local.processed_state_pool = pool + return pool diff --git a/tests/unit/core/test_pool.py b/tests/unit/core/test_pool.py index bb190b7e..cd27d89f 100644 --- a/tests/unit/core/test_pool.py +++ b/tests/unit/core/test_pool.py @@ -1,9 +1,12 @@ # pyright: reportPrivateImportUsage = false, reportPrivateUsage = false """Unit tests for ObjectPool behavior.""" +import threading +from queue import Queue + import pytest -from sqlspec.core._pool import ObjectPool +from sqlspec.core._pool import ObjectPool, get_processed_state_pool, get_sql_pool pytestmark = pytest.mark.xdist_group("core") @@ -65,3 +68,27 @@ def resetter(obj: _Sentinel) -> None: reused = pool.acquire() assert reused is first assert reused.value == 0 + + +def test_thread_local_pools_are_unique_per_thread() -> None: + main_pool = get_sql_pool() + queue: "Queue[object]" = Queue() + + def worker() -> None: + queue.put(get_sql_pool()) + + thread = threading.Thread(target=worker) + thread.start() + thread.join() + + worker_pool = queue.get() + assert worker_pool is not main_pool + + +def test_thread_local_pools_reuse_within_thread() -> None: + assert get_sql_pool() is get_sql_pool() + assert get_processed_state_pool() is get_processed_state_pool() + + +def test_thread_local_pools_are_distinct_by_type() -> None: + assert get_sql_pool() is not get_processed_state_pool() From 6736a2385a64df31807cca9450585795434dc202 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 03:59:33 +0000 Subject: [PATCH 28/66] feat(core): add SQL reset for pooling --- sqlspec/core/statement.py | 17 ++++++++++++++ tests/unit/core/test_statement.py | 38 +++++++++++++++++++++++++++++++ 2 files changed, 55 insertions(+) diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 492b1e09..18521ceb 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -253,6 +253,23 @@ def _create_auto_config( """ return get_default_config() + def reset(self) -> None: + """Reset SQL object for reuse in pooling scenarios.""" + self._compiled_from_cache = False + self._processed_state = Empty + self._hash = None + self._filters.clear() + self._named_parameters.clear() + self._positional_parameters.clear() + self._sql_param_counters.clear() + self._original_parameters = () + self._is_many = False + self._is_script = False + self._raw_expression = None + self._raw_sql = "" + self._statement_config = get_default_config() + self._dialect = self._normalize_dialect(self._statement_config.dialect) + def _normalize_dialect(self, dialect: "DialectType") -> "str | None": """Convert dialect to string representation. diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index 20dc3062..0eebd0dc 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -193,6 +193,44 @@ def test_processed_state_garbage_collected() -> None: assert state_ref() is None +def test_sql_reset_clears_state() -> None: + """SQL.reset() should clear mutable state and drop references.""" + config = StatementConfig(dialect="sqlite") + expression = exp.select("*").from_("users") + stmt = SQL(expression, LimitOffsetFilter(1, 0), statement_config=config, is_many=True, is_script=True, user_id=1) + + stmt._compiled_from_cache = True + stmt._hash = 123 + stmt._sql_param_counters["user_id"] = 1 + stmt._processed_state = ProcessedState("SELECT 1", [1], operation_type="SELECT") + + filters_ref = stmt._filters + named_ref = stmt._named_parameters + positional_ref = stmt._positional_parameters + counters_ref = stmt._sql_param_counters + + stmt.reset() + + assert stmt._compiled_from_cache is False + assert stmt._processed_state is Empty + assert stmt._hash is None + assert stmt._filters is filters_ref + assert stmt._filters == [] + assert stmt._named_parameters is named_ref + assert stmt._named_parameters == {} + assert stmt._positional_parameters is positional_ref + assert stmt._positional_parameters == [] + assert stmt._sql_param_counters is counters_ref + assert stmt._sql_param_counters == {} + assert stmt._original_parameters == () + assert stmt._raw_sql == "" + assert stmt._raw_expression is None + assert stmt._is_many is False + assert stmt._is_script is False + assert stmt._statement_config is get_default_config() + assert stmt._dialect is None + + def test_sql_initialization_with_string() -> None: """Test SQL initialization with string input.""" sql_str = "SELECT * FROM users" From 195c5e12aad2a2637576ff31738080e831766841 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 04:03:47 +0000 Subject: [PATCH 29/66] feat(core): add SQL pooled flag --- sqlspec/core/statement.py | 2 ++ tests/unit/core/test_statement.py | 7 +++++++ 2 files changed, 9 insertions(+) diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 18521ceb..52f7c953 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -181,6 +181,7 @@ class SQL: "_named_parameters", "_original_parameters", "_positional_parameters", + "_pooled", "_processed_state", "_raw_expression", "_raw_sql", @@ -212,6 +213,7 @@ def __init__( self._statement_config = config self._dialect = self._normalize_dialect(config.dialect) self._compiled_from_cache = False + self._pooled = False self._processed_state: EmptyEnum | ProcessedState = Empty self._hash: int | None = None self._filters: list[StatementFilter] = [] diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index 0eebd0dc..038d4328 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -231,6 +231,13 @@ def test_sql_reset_clears_state() -> None: assert stmt._dialect is None +def test_sql_pooled_flag_defaults_false() -> None: + """SQL should default to non-pooled state.""" + stmt = SQL("SELECT 1") + + assert stmt._pooled is False + + def test_sql_initialization_with_string() -> None: """Test SQL initialization with string input.""" sql_str = "SELECT * FROM users" From c8edf5ca5b248dfab7767a06afc4447453914b34 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 04:05:31 +0000 Subject: [PATCH 30/66] feat(core): pool parameter-only SQL copies --- sqlspec/core/_pool.py | 4 +++- sqlspec/core/statement.py | 5 +++-- tests/unit/core/test_statement.py | 9 +++++++++ 3 files changed, 15 insertions(+), 3 deletions(-) diff --git a/sqlspec/core/_pool.py b/sqlspec/core/_pool.py index b05de286..8e83eb7b 100644 --- a/sqlspec/core/_pool.py +++ b/sqlspec/core/_pool.py @@ -60,7 +60,9 @@ def _create_processed_state() -> "ProcessedState": def get_sql_pool() -> "ObjectPool[SQL]": pool = getattr(_thread_local, "sql_pool", None) if pool is None: - pool = ObjectPool(factory=_create_sql, resetter=_reset_noop) + from sqlspec.core.statement import SQL + + pool = ObjectPool(factory=_create_sql, resetter=SQL.reset) _thread_local.sql_pool = pool return pool diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 52f7c953..e7d0a700 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -16,6 +16,7 @@ from sqlspec.core.compiler import OperationProfile, OperationType from sqlspec.core.explain import ExplainFormat, ExplainOptions from sqlspec.core.hashing import hash_filters +from sqlspec.core._pool import get_sql_pool from sqlspec.core.parameters import ( ParameterConverter, ParameterProcessor, @@ -721,8 +722,7 @@ def copy( def _create_empty_copy(self) -> "SQL": """Create a shell copy with shared immutable state but empty mutable state.""" - # Use __new__ to bypass __init__ - new_sql = SQL.__new__(SQL) + new_sql = get_sql_pool().acquire() new_sql._raw_sql = self._raw_sql new_sql._raw_expression = self._raw_expression new_sql._statement_config = self._statement_config @@ -730,6 +730,7 @@ def _create_empty_copy(self) -> "SQL": new_sql._is_many = self._is_many new_sql._is_script = self._is_script new_sql._original_parameters = () + new_sql._pooled = True # Reset mutable state new_sql._compiled_from_cache = self._processed_state is not Empty diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index 038d4328..fe4e1ef7 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -238,6 +238,15 @@ def test_sql_pooled_flag_defaults_false() -> None: assert stmt._pooled is False +def test_sql_copy_uses_pool_for_parameter_only_change() -> None: + """Parameter-only copy should use pooled SQL object.""" + stmt = SQL("SELECT * FROM users WHERE id = ?", 1) + + copied = stmt.copy(parameters=(2,)) + + assert copied._pooled is True + + def test_sql_initialization_with_string() -> None: """Test SQL initialization with string input.""" sql_str = "SELECT * FROM users" From 08ac00b807e7cf3f90475cd9db203ca1e58c53d9 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 04:15:25 +0000 Subject: [PATCH 31/66] feat(driver): release pooled SQL after execution --- sqlspec/driver/_async.py | 171 ++++++++++---------- sqlspec/driver/_common.py | 5 + sqlspec/driver/_sync.py | 175 +++++++++++---------- tests/unit/adapters/test_async_adapters.py | 30 +++- tests/unit/adapters/test_sync_adapters.py | 30 +++- 5 files changed, 239 insertions(+), 172 deletions(-) diff --git a/sqlspec/driver/_async.py b/sqlspec/driver/_async.py index e3cd3b43..4113a739 100644 --- a/sqlspec/driver/_async.py +++ b/sqlspec/driver/_async.py @@ -133,94 +133,97 @@ async def dispatch_statement_execution(self, statement: "SQL", connection: "Any" The result of the SQL execution """ - runtime = self.observability - compiled_sql, execution_parameters = statement.compile() - _ = cast("ProcessedState", statement.get_processed_state()) - operation = statement.operation_type - query_context = { - "sql": compiled_sql, - "parameters": execution_parameters, - "driver": type(self).__name__, - "operation": operation, - "is_many": statement.is_many, - "is_script": statement.is_script, - } - runtime.emit_query_start(**query_context) - span = runtime.start_query_span(compiled_sql, operation, type(self).__name__) - started = perf_counter() - - result: SQLResult | None = None - exc_handler = self.handle_database_exceptions() - cursor_manager = self.with_cursor(connection) - cursor: Any | None = None - exc: Exception | None = None - exc_handler_entered = False - cursor_entered = False - try: - await exc_handler.__aenter__() - exc_handler_entered = True - cursor = await cursor_manager.__aenter__() - cursor_entered = True - special_result = await self.dispatch_special_handling(cursor, statement) - if special_result is not None: - result = special_result - elif statement.is_script: - execution_result = await self.dispatch_execute_script(cursor, statement) - result = self.build_statement_result(statement, execution_result) - elif statement.is_many: - execution_result = await self.dispatch_execute_many(cursor, statement) - result = self.build_statement_result(statement, execution_result) - else: - execution_result = await self.dispatch_execute(cursor, statement) - result = self.build_statement_result(statement, execution_result) - except Exception as err: - exc = err - finally: - if cursor_entered: - if exc is None: - await cursor_manager.__aexit__(None, None, None) - else: - await cursor_manager.__aexit__(type(exc), exc, exc.__traceback__) - if exc_handler_entered: - if exc is None: - await exc_handler.__aexit__(None, None, None) + runtime = self.observability + compiled_sql, execution_parameters = statement.compile() + _ = cast("ProcessedState", statement.get_processed_state()) + operation = statement.operation_type + query_context = { + "sql": compiled_sql, + "parameters": execution_parameters, + "driver": type(self).__name__, + "operation": operation, + "is_many": statement.is_many, + "is_script": statement.is_script, + } + runtime.emit_query_start(**query_context) + span = runtime.start_query_span(compiled_sql, operation, type(self).__name__) + started = perf_counter() + + result: SQLResult | None = None + exc_handler = self.handle_database_exceptions() + cursor_manager = self.with_cursor(connection) + cursor: Any | None = None + exc: Exception | None = None + exc_handler_entered = False + cursor_entered = False + + try: + await exc_handler.__aenter__() + exc_handler_entered = True + cursor = await cursor_manager.__aenter__() + cursor_entered = True + special_result = await self.dispatch_special_handling(cursor, statement) + if special_result is not None: + result = special_result + elif statement.is_script: + execution_result = await self.dispatch_execute_script(cursor, statement) + result = self.build_statement_result(statement, execution_result) + elif statement.is_many: + execution_result = await self.dispatch_execute_many(cursor, statement) + result = self.build_statement_result(statement, execution_result) else: - await exc_handler.__aexit__(type(exc), exc, exc.__traceback__) + execution_result = await self.dispatch_execute(cursor, statement) + result = self.build_statement_result(statement, execution_result) + except Exception as err: + exc = err + finally: + if cursor_entered: + if exc is None: + await cursor_manager.__aexit__(None, None, None) + else: + await cursor_manager.__aexit__(type(exc), exc, exc.__traceback__) + if exc_handler_entered: + if exc is None: + await exc_handler.__aexit__(None, None, None) + else: + await exc_handler.__aexit__(type(exc), exc, exc.__traceback__) + + if exc is not None: + mapped_exc = exc_handler.pending_exception or exc + runtime.span_manager.end_span(span, error=mapped_exc) + runtime.emit_error(mapped_exc, **query_context) + if exc_handler.pending_exception is not None: + raise mapped_exc from exc + raise exc - if exc is not None: - mapped_exc = exc_handler.pending_exception or exc - runtime.span_manager.end_span(span, error=mapped_exc) - runtime.emit_error(mapped_exc, **query_context) if exc_handler.pending_exception is not None: - raise mapped_exc from exc - raise exc - - if exc_handler.pending_exception is not None: - mapped_exc = exc_handler.pending_exception - runtime.span_manager.end_span(span, error=mapped_exc) - runtime.emit_error(mapped_exc, **query_context) - raise mapped_exc from None - - assert result is not None # Guaranteed: no exception means result was assigned - - runtime.span_manager.end_span(span) - duration = perf_counter() - started - runtime.emit_query_complete(**{**query_context, "rows_affected": result.rows_affected}) - runtime.emit_statement_event( - sql=compiled_sql, - parameters=execution_parameters, - driver=type(self).__name__, - operation=operation, - execution_mode=self.statement_config.execution_mode, - is_many=statement.is_many, - is_script=statement.is_script, - rows_affected=result.rows_affected, - duration_s=duration, - storage_backend=(result.metadata or {}).get("storage_backend"), - started_at=started, - ) - return result + mapped_exc = exc_handler.pending_exception + runtime.span_manager.end_span(span, error=mapped_exc) + runtime.emit_error(mapped_exc, **query_context) + raise mapped_exc from None + + assert result is not None # Guaranteed: no exception means result was assigned + + runtime.span_manager.end_span(span) + duration = perf_counter() - started + runtime.emit_query_complete(**{**query_context, "rows_affected": result.rows_affected}) + runtime.emit_statement_event( + sql=compiled_sql, + parameters=execution_parameters, + driver=type(self).__name__, + operation=operation, + execution_mode=self.statement_config.execution_mode, + is_many=statement.is_many, + is_script=statement.is_script, + rows_affected=result.rows_affected, + duration_s=duration, + storage_backend=(result.metadata or {}).get("storage_backend"), + started_at=started, + ) + return result + finally: + self._release_pooled_statement(statement) @abstractmethod async def dispatch_execute(self, cursor: Any, statement: "SQL") -> ExecutionResult: diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index 9af8d8da..ec59ce2c 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -25,6 +25,7 @@ get_cache_config, split_sql_script, ) +from sqlspec.core._pool import get_sql_pool from sqlspec.core.metrics import StackExecutionMetrics from sqlspec.core.parameters import structural_fingerprint, value_fingerprint from sqlspec.data_dictionary._loader import get_data_dictionary_loader @@ -902,6 +903,10 @@ def _raise_storage_not_implemented(self, capability: str) -> None: remediation = "Override storage methods on the adapter to enable this capability." raise StorageCapabilityError(msg, capability=capability, remediation=remediation) + def _release_pooled_statement(self, statement: "SQL") -> None: + if getattr(statement, "_pooled", False): + get_sql_pool().release(statement) + @overload @staticmethod def to_schema(data: "list[dict[str, Any]]", *, schema_type: "type[SchemaT]") -> "list[SchemaT]": ... diff --git a/sqlspec/driver/_sync.py b/sqlspec/driver/_sync.py index 9f1d500c..ce1afb1a 100644 --- a/sqlspec/driver/_sync.py +++ b/sqlspec/driver/_sync.py @@ -123,104 +123,107 @@ def dispatch_statement_execution(self, statement: "SQL", connection: "Any") -> " The result of the SQL execution """ - runtime = self.observability - # Pre-compile the statement so dispatch methods can reuse the processed state - # via the fast path in _get_compiled_statement(). This ensures compile() - # is called exactly once per statement execution. - compiled_sql, execution_parameters = statement.compile() - - # FAST PATH: Skip all instrumentation if runtime is idle - if runtime.is_idle: + try: + runtime = self.observability + # Pre-compile the statement so dispatch methods can reuse the processed state + # via the fast path in _get_compiled_statement(). This ensures compile() + # is called exactly once per statement execution. + compiled_sql, execution_parameters = statement.compile() + + # FAST PATH: Skip all instrumentation if runtime is idle + if runtime.is_idle: + exc_handler = self.handle_database_exceptions() + try: + with exc_handler, self.with_cursor(connection) as cursor: + # Logic mirrors the instrumentation path below but without telemetry + if statement.is_script: + execution_result = self.dispatch_execute_script(cursor, statement) + return self.build_statement_result(statement, execution_result) + if statement.is_many: + execution_result = self.dispatch_execute_many(cursor, statement) + return self.build_statement_result(statement, execution_result) + + # check special handling first + special_result = self.dispatch_special_handling(cursor, statement) + if special_result is not None: + return special_result + + execution_result = self.dispatch_execute(cursor, statement) + return self.build_statement_result(statement, execution_result) + except Exception as exc: + if exc_handler.pending_exception is not None: + raise exc_handler.pending_exception from exc + raise + finally: + if exc_handler.pending_exception is not None: + raise exc_handler.pending_exception from None + + operation = statement.operation_type + query_context = { + "sql": compiled_sql, + "parameters": execution_parameters, + "driver": type(self).__name__, + "operation": operation, + "is_many": statement.is_many, + "is_script": statement.is_script, + } + runtime.emit_query_start(**query_context) + span = runtime.start_query_span(compiled_sql, operation, type(self).__name__) + started = perf_counter() + + result: SQLResult | None = None exc_handler = self.handle_database_exceptions() try: with exc_handler, self.with_cursor(connection) as cursor: - # Logic mirrors the instrumentation path below but without telemetry - if statement.is_script: - execution_result = self.dispatch_execute_script(cursor, statement) - return self.build_statement_result(statement, execution_result) - if statement.is_many: - execution_result = self.dispatch_execute_many(cursor, statement) - return self.build_statement_result(statement, execution_result) - - # check special handling first special_result = self.dispatch_special_handling(cursor, statement) if special_result is not None: - return special_result - - execution_result = self.dispatch_execute(cursor, statement) - return self.build_statement_result(statement, execution_result) - except Exception as exc: + result = special_result + elif statement.is_script: + execution_result = self.dispatch_execute_script(cursor, statement) + result = self.build_statement_result(statement, execution_result) + elif statement.is_many: + execution_result = self.dispatch_execute_many(cursor, statement) + result = self.build_statement_result(statement, execution_result) + else: + execution_result = self.dispatch_execute(cursor, statement) + result = self.build_statement_result(statement, execution_result) + except Exception as exc: # pragma: no cover - instrumentation path if exc_handler.pending_exception is not None: - raise exc_handler.pending_exception from exc + mapped_exc = exc_handler.pending_exception + runtime.span_manager.end_span(span, error=mapped_exc) + runtime.emit_error(mapped_exc, **query_context) + raise mapped_exc from exc + runtime.span_manager.end_span(span, error=exc) + runtime.emit_error(exc, **query_context) raise - finally: - if exc_handler.pending_exception is not None: - raise exc_handler.pending_exception from None - - operation = statement.operation_type - query_context = { - "sql": compiled_sql, - "parameters": execution_parameters, - "driver": type(self).__name__, - "operation": operation, - "is_many": statement.is_many, - "is_script": statement.is_script, - } - runtime.emit_query_start(**query_context) - span = runtime.start_query_span(compiled_sql, operation, type(self).__name__) - started = perf_counter() - result: SQLResult | None = None - exc_handler = self.handle_database_exceptions() - try: - with exc_handler, self.with_cursor(connection) as cursor: - special_result = self.dispatch_special_handling(cursor, statement) - if special_result is not None: - result = special_result - elif statement.is_script: - execution_result = self.dispatch_execute_script(cursor, statement) - result = self.build_statement_result(statement, execution_result) - elif statement.is_many: - execution_result = self.dispatch_execute_many(cursor, statement) - result = self.build_statement_result(statement, execution_result) - else: - execution_result = self.dispatch_execute(cursor, statement) - result = self.build_statement_result(statement, execution_result) - except Exception as exc: # pragma: no cover - instrumentation path if exc_handler.pending_exception is not None: mapped_exc = exc_handler.pending_exception runtime.span_manager.end_span(span, error=mapped_exc) runtime.emit_error(mapped_exc, **query_context) - raise mapped_exc from exc - runtime.span_manager.end_span(span, error=exc) - runtime.emit_error(exc, **query_context) - raise - - if exc_handler.pending_exception is not None: - mapped_exc = exc_handler.pending_exception - runtime.span_manager.end_span(span, error=mapped_exc) - runtime.emit_error(mapped_exc, **query_context) - raise mapped_exc from None - - assert result is not None # Guaranteed: no exception means result was assigned - - runtime.span_manager.end_span(span) - duration = perf_counter() - started - runtime.emit_query_complete(**{**query_context, "rows_affected": result.rows_affected}) - runtime.emit_statement_event( - sql=compiled_sql, - parameters=execution_parameters, - driver=type(self).__name__, - operation=operation, - execution_mode=self.statement_config.execution_mode, - is_many=statement.is_many, - is_script=statement.is_script, - rows_affected=result.rows_affected, - duration_s=duration, - storage_backend=(result.metadata or {}).get("storage_backend"), - started_at=started, - ) - return result + raise mapped_exc from None + + assert result is not None # Guaranteed: no exception means result was assigned + + runtime.span_manager.end_span(span) + duration = perf_counter() - started + runtime.emit_query_complete(**{**query_context, "rows_affected": result.rows_affected}) + runtime.emit_statement_event( + sql=compiled_sql, + parameters=execution_parameters, + driver=type(self).__name__, + operation=operation, + execution_mode=self.statement_config.execution_mode, + is_many=statement.is_many, + is_script=statement.is_script, + rows_affected=result.rows_affected, + duration_s=duration, + storage_backend=(result.metadata or {}).get("storage_backend"), + started_at=started, + ) + return result + finally: + self._release_pooled_statement(statement) @abstractmethod def dispatch_execute(self, cursor: Any, statement: "SQL") -> ExecutionResult: diff --git a/tests/unit/adapters/test_async_adapters.py b/tests/unit/adapters/test_async_adapters.py index 4956db23..e007c672 100644 --- a/tests/unit/adapters/test_async_adapters.py +++ b/tests/unit/adapters/test_async_adapters.py @@ -6,9 +6,17 @@ import pytest -from sqlspec.core import SQL, ParameterStyle, ParameterStyleConfig, SQLResult, StatementConfig +from sqlspec.core import ( + SQL, + ParameterStyle, + ParameterStyleConfig, + SQLResult, + StatementConfig, + get_default_config, +) from sqlspec.driver import ExecutionResult from sqlspec.exceptions import NotFoundError, SQLSpecError +from sqlspec.typing import Empty from tests.unit.adapters.conftest import MockAsyncConnection, MockAsyncCursor, MockAsyncDriver pytestmark = pytest.mark.xdist_group("adapter_unit") @@ -201,6 +209,26 @@ async def test_async_driver_dispatch_statement_execution_many(mock_async_driver: assert result.rows_affected == 2 +async def test_async_driver_releases_pooled_statement(mock_async_driver: MockAsyncDriver) -> None: + """Pooled statements should be reset after dispatch execution.""" + seed = "SELECT * FROM users WHERE id = ?" + mock_async_driver.prepare_statement( + seed, (1,), statement_config=mock_async_driver.statement_config, kwargs={} + ) + pooled = mock_async_driver.prepare_statement( + seed, (2,), statement_config=mock_async_driver.statement_config, kwargs={} + ) + + assert pooled._pooled is True + + await mock_async_driver.dispatch_statement_execution(pooled, mock_async_driver.connection) + + assert pooled._raw_sql == "" + assert pooled._processed_state is Empty + assert pooled._filters == [] + assert pooled._statement_config is get_default_config() + + async def test_async_driver_transaction_management(mock_async_driver: MockAsyncDriver) -> None: """Test async transaction management methods.""" connection = mock_async_driver.connection diff --git a/tests/unit/adapters/test_sync_adapters.py b/tests/unit/adapters/test_sync_adapters.py index cd9f4386..14182689 100644 --- a/tests/unit/adapters/test_sync_adapters.py +++ b/tests/unit/adapters/test_sync_adapters.py @@ -6,9 +6,17 @@ import pytest -from sqlspec.core import SQL, ParameterStyle, ParameterStyleConfig, SQLResult, StatementConfig +from sqlspec.core import ( + SQL, + ParameterStyle, + ParameterStyleConfig, + SQLResult, + StatementConfig, + get_default_config, +) from sqlspec.driver import ExecutionResult from sqlspec.exceptions import NotFoundError, SQLSpecError +from sqlspec.typing import Empty from tests.unit.adapters.conftest import MockSyncConnection, MockSyncDriver pytestmark = pytest.mark.xdist_group("adapter_unit") @@ -205,6 +213,26 @@ def test_sync_driver_dispatch_statement_execution_many(mock_sync_driver: MockSyn assert result.rows_affected == 2 +def test_sync_driver_releases_pooled_statement(mock_sync_driver: MockSyncDriver) -> None: + """Pooled statements should be reset after dispatch execution.""" + seed = "SELECT * FROM users WHERE id = ?" + mock_sync_driver.prepare_statement( + seed, (1,), statement_config=mock_sync_driver.statement_config, kwargs={} + ) + pooled = mock_sync_driver.prepare_statement( + seed, (2,), statement_config=mock_sync_driver.statement_config, kwargs={} + ) + + assert pooled._pooled is True + + mock_sync_driver.dispatch_statement_execution(pooled, mock_sync_driver.connection) + + assert pooled._raw_sql == "" + assert pooled._processed_state is Empty + assert pooled._filters == [] + assert pooled._statement_config is get_default_config() + + def test_sync_driver_transaction_management(mock_sync_driver: MockSyncDriver) -> None: """Test transaction management methods.""" connection = mock_sync_driver.connection From 72aa8023366a20a2bfc07dbbfe43c5296f48873a Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 04:18:24 +0000 Subject: [PATCH 32/66] feat(core): add ProcessedState reset --- sqlspec/core/statement.py | 16 ++++++++++++ tests/unit/core/test_statement.py | 42 +++++++++++++++++++++++++++++++ 2 files changed, 58 insertions(+) diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index e7d0a700..178a0df9 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -162,6 +162,22 @@ def __init__( def __hash__(self) -> int: return hash((self.compiled_sql, str(self.execution_parameters), self.operation_type)) + def reset(self) -> None: + """Reset processing state for reuse.""" + self.compiled_sql = "" + self.execution_parameters = [] + self.parsed_expression = None + self.operation_type = "COMMAND" + self.input_named_parameters = () + self.applied_wrap_types = False + self.filter_hash = 0 + self.parameter_fingerprint = None + self.parameter_casts.clear() + self.validation_errors.clear() + self.parameter_profile = ParameterProfile.empty() + self.operation_profile = OperationProfile.empty() + self.is_many = False + @mypyc_attr(allow_interpreted_subclasses=False) class SQL: diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index fe4e1ef7..f79526f5 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -27,6 +27,7 @@ from sqlspec.core import ( SQL, CompiledSQL, + OperationProfile, OperationType, ParameterProfile, ParameterStyle, @@ -193,6 +194,47 @@ def test_processed_state_garbage_collected() -> None: assert state_ref() is None +def test_processed_state_reset_clears_state() -> None: + """ProcessedState.reset() should clear mutable data for reuse.""" + state = ProcessedState( + compiled_sql="SELECT * FROM users WHERE id = ?", + execution_parameters=[1], + parsed_expression=exp.select("*").from_("users"), + operation_type="SELECT", + input_named_parameters=("id",), + applied_wrap_types=True, + filter_hash=123, + parameter_fingerprint="fingerprint", + parameter_casts={0: "int"}, + validation_errors=["err"], + parameter_profile=ParameterProfile.empty(), + operation_profile=OperationProfile.empty(), + is_many=True, + ) + + casts_ref = state.parameter_casts + errors_ref = state.validation_errors + + state.reset() + + assert state.compiled_sql == "" + assert state.execution_parameters == [] + assert state.parsed_expression is None + assert state.operation_type == "COMMAND" + assert state.input_named_parameters == () + assert state.applied_wrap_types is False + assert state.filter_hash == 0 + assert state.parameter_fingerprint is None + assert state.parameter_casts is casts_ref + assert state.parameter_casts == {} + assert state.validation_errors is errors_ref + assert state.validation_errors == [] + assert state.parameter_profile.is_empty() + assert state.operation_profile.returns_rows is False + assert state.operation_profile.modifies_rows is False + assert state.is_many is False + + def test_sql_reset_clears_state() -> None: """SQL.reset() should clear mutable state and drop references.""" config = StatementConfig(dialect="sqlite") From d834c25ace8a0ee81bdc31c26b0a75120bf491f5 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 04:35:11 +0000 Subject: [PATCH 33/66] feat(core): pool ProcessedState instances --- sqlspec/core/_pool.py | 6 ++-- sqlspec/core/statement.py | 48 ++++++++++++++++++++++++++++--- tests/unit/core/test_statement.py | 21 ++++++++++++++ 3 files changed, 69 insertions(+), 6 deletions(-) diff --git a/sqlspec/core/_pool.py b/sqlspec/core/_pool.py index 8e83eb7b..be5b962e 100644 --- a/sqlspec/core/_pool.py +++ b/sqlspec/core/_pool.py @@ -54,7 +54,7 @@ def _create_sql() -> "SQL": def _create_processed_state() -> "ProcessedState": from sqlspec.core.statement import ProcessedState - return ProcessedState.__new__(ProcessedState) + return ProcessedState("", [], None, "COMMAND") def get_sql_pool() -> "ObjectPool[SQL]": @@ -70,6 +70,8 @@ def get_sql_pool() -> "ObjectPool[SQL]": def get_processed_state_pool() -> "ObjectPool[ProcessedState]": pool = getattr(_thread_local, "processed_state_pool", None) if pool is None: - pool = ObjectPool(factory=_create_processed_state, resetter=_reset_noop) + from sqlspec.core.statement import ProcessedState + + pool = ObjectPool(factory=_create_processed_state, resetter=ProcessedState.reset) _thread_local.processed_state_pool = pool return pool diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 178a0df9..89cadbe9 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -16,7 +16,7 @@ from sqlspec.core.compiler import OperationProfile, OperationType from sqlspec.core.explain import ExplainFormat, ExplainOptions from sqlspec.core.hashing import hash_filters -from sqlspec.core._pool import get_sql_pool +from sqlspec.core._pool import get_processed_state_pool, get_sql_pool from sqlspec.core.parameters import ( ParameterConverter, ParameterProcessor, @@ -274,6 +274,8 @@ def _create_auto_config( def reset(self) -> None: """Reset SQL object for reuse in pooling scenarios.""" + if self._pooled and not self._compiled_from_cache and self._processed_state is not Empty: + get_processed_state_pool().release(self._processed_state) self._compiled_from_cache = False self._processed_state = Empty self._hash = None @@ -615,7 +617,7 @@ def compile(self) -> "tuple[str, Any]": config, raw_sql, params, is_many=is_many, expression=self._raw_expression ) - self._processed_state = ProcessedState( + self._processed_state = self._build_processed_state( compiled_sql=compiled_result.compiled_sql, execution_parameters=compiled_result.execution_parameters, parsed_expression=compiled_result.expression, @@ -657,7 +659,7 @@ def _rebind_cached_parameters(self, state: "ProcessedState") -> "tuple[str, Any] output_transformer = self._statement_config.output_transformer if output_transformer: compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) - self._processed_state = ProcessedState( + self._processed_state = self._build_processed_state( compiled_sql=compiled_sql, execution_parameters=rebound_params, parsed_expression=state.parsed_expression, @@ -759,15 +761,52 @@ def _create_empty_copy(self) -> "SQL": return new_sql + def _build_processed_state( + self, + *, + compiled_sql: str, + execution_parameters: Any, + parsed_expression: "exp.Expression | None", + operation_type: "OperationType", + input_named_parameters: "tuple[str, ...] | None", + applied_wrap_types: bool, + filter_hash: int, + parameter_fingerprint: str | None, + parameter_casts: "dict[int, str] | None", + parameter_profile: "ParameterProfile | None", + operation_profile: "OperationProfile | None", + validation_errors: "list[str] | None", + is_many: bool, + ) -> "ProcessedState": + state = get_processed_state_pool().acquire() + ProcessedState.__init__( + state, + compiled_sql=compiled_sql, + execution_parameters=execution_parameters, + parsed_expression=parsed_expression, + operation_type=operation_type, + input_named_parameters=input_named_parameters, + applied_wrap_types=applied_wrap_types, + filter_hash=filter_hash, + parameter_fingerprint=parameter_fingerprint, + parameter_casts=parameter_casts, + validation_errors=validation_errors, + parameter_profile=parameter_profile, + operation_profile=operation_profile, + is_many=is_many, + ) + return state + def _handle_compile_failure(self, error: Exception) -> ProcessedState: import traceback traceback.print_exc() logger.debug("Processing failed, using fallback: %s", error) params = self._named_parameters or self._positional_parameters - return ProcessedState( + return self._build_processed_state( compiled_sql=self._raw_sql, execution_parameters=self._named_parameters or self._positional_parameters, + parsed_expression=None, operation_type="COMMAND", input_named_parameters=(), applied_wrap_types=False, @@ -776,6 +815,7 @@ def _handle_compile_failure(self, error: Exception) -> ProcessedState: parameter_casts={}, parameter_profile=ParameterProfile.empty(), operation_profile=OperationProfile.empty(), + validation_errors=[str(error)], is_many=self._is_many, ) diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index f79526f5..7fcb3bd4 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -232,6 +232,27 @@ def test_processed_state_reset_clears_state() -> None: assert state.parameter_profile.is_empty() assert state.operation_profile.returns_rows is False assert state.operation_profile.modifies_rows is False + + +def test_processed_state_pool_resets_on_release() -> None: + """ProcessedState pool should reset state before reuse.""" + from sqlspec.core._pool import get_processed_state_pool + + pool = get_processed_state_pool() + state = pool.acquire() + state.compiled_sql = "SELECT 1" + state.execution_parameters = [1] + state.operation_type = "SELECT" + state.parameter_casts["k"] = "v" + + pool.release(state) + + reused = pool.acquire() + + assert reused.compiled_sql == "" + assert reused.execution_parameters == [] + assert reused.operation_type == "COMMAND" + assert reused.parameter_casts == {} assert state.is_many is False From 6d84f50b8f5f7c7f38728f0c1f43adab0b28d51a Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 04:38:17 +0000 Subject: [PATCH 34/66] feat(bench): add tracemalloc allocation helper --- benchmark_repro.py | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/benchmark_repro.py b/benchmark_repro.py index 871845e9..a4c22296 100644 --- a/benchmark_repro.py +++ b/benchmark_repro.py @@ -3,6 +3,7 @@ import sqlite3 import tempfile import time +import tracemalloc from pathlib import Path from typing import TYPE_CHECKING @@ -68,6 +69,17 @@ def run_benchmark(fn: "Callable[[Path], None]", label: str) -> float: return sum(times) / len(times) + +def run_benchmark_allocations(fn: "Callable[[Path], None]") -> "tuple[int, int]": + """Return (current, peak) allocated bytes for a benchmark run.""" + with tempfile.TemporaryDirectory() as d: + db_path = Path(d) / "alloc.db" + tracemalloc.start() + fn(db_path) + current, peak = tracemalloc.get_traced_memory() + tracemalloc.stop() + return current, peak + __all__ = ( "assert_compile_bypass", "bench_raw_sqlite", From a475ca205eb30a447f57f58a53c0264bc1c0bf49 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 04:41:01 +0000 Subject: [PATCH 35/66] test(core): add pool stability stress --- tests/unit/core/test_pool.py | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/tests/unit/core/test_pool.py b/tests/unit/core/test_pool.py index cd27d89f..b48b43f2 100644 --- a/tests/unit/core/test_pool.py +++ b/tests/unit/core/test_pool.py @@ -92,3 +92,21 @@ def test_thread_local_pools_reuse_within_thread() -> None: def test_thread_local_pools_are_distinct_by_type() -> None: assert get_sql_pool() is not get_processed_state_pool() + + +def test_object_pool_reuse_stability_over_iterations() -> None: + """Pool should cap retained objects and avoid unbounded growth.""" + pool = ObjectPool(factory=lambda: _Sentinel(0), resetter=lambda obj: setattr(obj, "value", 0), max_size=8) + + for _ in range(100_000): + a = pool.acquire() + b = pool.acquire() + c = pool.acquire() + a.value = 1 + b.value = 1 + c.value = 1 + pool.release(a) + pool.release(b) + pool.release(c) + + assert len(pool._pool) <= 8 From 0bebe06e5726d3f3e653e9167be2d0fabd9f1bc4 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 04:42:42 +0000 Subject: [PATCH 36/66] test(core): add pool thread isolation --- tests/unit/core/test_pool.py | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/tests/unit/core/test_pool.py b/tests/unit/core/test_pool.py index b48b43f2..542e13f5 100644 --- a/tests/unit/core/test_pool.py +++ b/tests/unit/core/test_pool.py @@ -110,3 +110,17 @@ def test_object_pool_reuse_stability_over_iterations() -> None: pool.release(c) assert len(pool._pool) <= 8 + + +def test_object_pool_thread_isolation() -> None: + """Thread-local pools should not share objects across threads.""" + queue: "Queue[ObjectPool[_Sentinel]]" = Queue() + + def worker() -> None: + queue.put(get_sql_pool()) + + thread = threading.Thread(target=worker) + thread.start() + thread.join() + + assert queue.get() is not get_sql_pool() From 9b26e24c670b346248dda3e247deac82741aa181 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 04:49:17 +0000 Subject: [PATCH 37/66] chore: apply lint fixes --- benchmark_dispatch.py | 2 ++ benchmark_repro.py | 2 ++ sqlspec/core/_pool.py | 13 ++++++------- sqlspec/core/parameters/_processor.py | 4 +--- sqlspec/core/statement.py | 4 ++-- sqlspec/driver/_common.py | 19 ++++--------------- tests/unit/adapters/test_async_adapters.py | 13 ++----------- tests/unit/adapters/test_sync_adapters.py | 13 ++----------- tests/unit/core/test_pool.py | 12 ++++++++---- tests/unit/core/test_statement.py | 4 ++-- tools/benchmark_transform.py | 12 +++++------- 11 files changed, 36 insertions(+), 62 deletions(-) diff --git a/benchmark_dispatch.py b/benchmark_dispatch.py index 9a040b73..fa1c1d77 100644 --- a/benchmark_dispatch.py +++ b/benchmark_dispatch.py @@ -3,6 +3,8 @@ from sqlspec.utils.dispatch import TypeDispatcher +__all__ = ("MyFilter", "StatementFilter", "bench_dispatcher", "bench_getattr", "bench_isinstance", "bench_try_except", ) + class StatementFilter: _is_statement_filter = True diff --git a/benchmark_repro.py b/benchmark_repro.py index a4c22296..48e1a161 100644 --- a/benchmark_repro.py +++ b/benchmark_repro.py @@ -80,6 +80,7 @@ def run_benchmark_allocations(fn: "Callable[[Path], None]") -> "tuple[int, int]" tracemalloc.stop() return current, peak + __all__ = ( "assert_compile_bypass", "bench_raw_sqlite", @@ -238,6 +239,7 @@ def assert_compile_bypass(db_path: Path) -> None: msg = f"Expected 1 compilation call for repeated inserts, got {calls}" raise AssertionError(msg) + # ------------------------- # Main # ------------------------- diff --git a/sqlspec/core/_pool.py b/sqlspec/core/_pool.py index be5b962e..42cda72b 100644 --- a/sqlspec/core/_pool.py +++ b/sqlspec/core/_pool.py @@ -7,7 +7,11 @@ if TYPE_CHECKING: from collections.abc import Callable - from sqlspec.core.statement import ProcessedState, SQL + + from sqlspec.core.statement import SQL, ProcessedState + +__all__ = ("ObjectPool", "get_processed_state_pool", "get_sql_pool", ) + T = TypeVar("T") _thread_local = threading.local() @@ -19,12 +23,7 @@ class ObjectPool(Generic[T]): __slots__ = ("_factory", "_max_size", "_pool", "_resetter") - def __init__( - self, - factory: "Callable[[], T]", - resetter: "Callable[[T], None]", - max_size: int = 100, - ) -> None: + def __init__(self, factory: "Callable[[], T]", resetter: "Callable[[T], None]", max_size: int = 100) -> None: self._pool: list[T] = [] self._max_size = max_size self._factory = factory diff --git a/sqlspec/core/parameters/_processor.py b/sqlspec/core/parameters/_processor.py index d3190d53..c68e7c0d 100644 --- a/sqlspec/core/parameters/_processor.py +++ b/sqlspec/core/parameters/_processor.py @@ -112,9 +112,7 @@ def _fingerprint_execute_many(parameters: "Sequence[Any]") -> Any: """ param_count = len(parameters) sample_size = ( - min(_EXECUTE_MANY_SAMPLE_SIZE, param_count) - if param_count > _EXECUTE_MANY_SAMPLE_THRESHOLD - else param_count + min(_EXECUTE_MANY_SAMPLE_SIZE, param_count) if param_count > _EXECUTE_MANY_SAMPLE_THRESHOLD else param_count ) first = parameters[0] first_type = type(first) diff --git a/sqlspec/core/statement.py b/sqlspec/core/statement.py index 89cadbe9..62bc1771 100644 --- a/sqlspec/core/statement.py +++ b/sqlspec/core/statement.py @@ -12,11 +12,11 @@ import sqlspec.exceptions from sqlspec.core import pipeline +from sqlspec.core._pool import get_processed_state_pool, get_sql_pool from sqlspec.core.cache import FiltersView from sqlspec.core.compiler import OperationProfile, OperationType from sqlspec.core.explain import ExplainFormat, ExplainOptions from sqlspec.core.hashing import hash_filters -from sqlspec.core._pool import get_processed_state_pool, get_sql_pool from sqlspec.core.parameters import ( ParameterConverter, ParameterProcessor, @@ -197,8 +197,8 @@ class SQL: "_is_script", "_named_parameters", "_original_parameters", - "_positional_parameters", "_pooled", + "_positional_parameters", "_processed_state", "_raw_expression", "_raw_sql", diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index ec59ce2c..eb3868fb 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -1392,15 +1392,10 @@ def _get_compiled_statement( if getattr(statement, "_compiled_from_cache", False): compiled_sql, execution_parameters = statement.compile() prepared_parameters = self.prepare_driver_parameters( - execution_parameters, - statement_config, - is_many=statement.is_many, - prepared_statement=statement, + execution_parameters, statement_config, is_many=statement.is_many, prepared_statement=statement ) cached_statement = CachedStatement( - compiled_sql=compiled_sql, - parameters=prepared_parameters, - expression=statement.expression, + compiled_sql=compiled_sql, parameters=prepared_parameters, expression=statement.expression ) return cached_statement, prepared_parameters @@ -1445,10 +1440,7 @@ def _get_compiled_statement( # Compile with the statement's parameters to get correctly processed values. compiled_sql, execution_parameters = statement.compile() prepared_parameters = self.prepare_driver_parameters( - execution_parameters, - statement_config, - is_many=statement.is_many, - prepared_statement=statement, + execution_parameters, statement_config, is_many=statement.is_many, prepared_statement=statement ) # Return cached SQL metadata but with newly processed parameters # Preserve list type for execute_many operations (some drivers require list, not tuple) @@ -1463,10 +1455,7 @@ def _get_compiled_statement( compiled_sql, execution_parameters = statement.compile() prepared_parameters = self.prepare_driver_parameters( - execution_parameters, - statement_config, - is_many=statement.is_many, - prepared_statement=statement, + execution_parameters, statement_config, is_many=statement.is_many, prepared_statement=statement ) cached_parameters = tuple(prepared_parameters) if isinstance(prepared_parameters, list) else prepared_parameters diff --git a/tests/unit/adapters/test_async_adapters.py b/tests/unit/adapters/test_async_adapters.py index e007c672..54bb2eef 100644 --- a/tests/unit/adapters/test_async_adapters.py +++ b/tests/unit/adapters/test_async_adapters.py @@ -6,14 +6,7 @@ import pytest -from sqlspec.core import ( - SQL, - ParameterStyle, - ParameterStyleConfig, - SQLResult, - StatementConfig, - get_default_config, -) +from sqlspec.core import SQL, ParameterStyle, ParameterStyleConfig, SQLResult, StatementConfig, get_default_config from sqlspec.driver import ExecutionResult from sqlspec.exceptions import NotFoundError, SQLSpecError from sqlspec.typing import Empty @@ -212,9 +205,7 @@ async def test_async_driver_dispatch_statement_execution_many(mock_async_driver: async def test_async_driver_releases_pooled_statement(mock_async_driver: MockAsyncDriver) -> None: """Pooled statements should be reset after dispatch execution.""" seed = "SELECT * FROM users WHERE id = ?" - mock_async_driver.prepare_statement( - seed, (1,), statement_config=mock_async_driver.statement_config, kwargs={} - ) + mock_async_driver.prepare_statement(seed, (1,), statement_config=mock_async_driver.statement_config, kwargs={}) pooled = mock_async_driver.prepare_statement( seed, (2,), statement_config=mock_async_driver.statement_config, kwargs={} ) diff --git a/tests/unit/adapters/test_sync_adapters.py b/tests/unit/adapters/test_sync_adapters.py index 14182689..9cb01661 100644 --- a/tests/unit/adapters/test_sync_adapters.py +++ b/tests/unit/adapters/test_sync_adapters.py @@ -6,14 +6,7 @@ import pytest -from sqlspec.core import ( - SQL, - ParameterStyle, - ParameterStyleConfig, - SQLResult, - StatementConfig, - get_default_config, -) +from sqlspec.core import SQL, ParameterStyle, ParameterStyleConfig, SQLResult, StatementConfig, get_default_config from sqlspec.driver import ExecutionResult from sqlspec.exceptions import NotFoundError, SQLSpecError from sqlspec.typing import Empty @@ -216,9 +209,7 @@ def test_sync_driver_dispatch_statement_execution_many(mock_sync_driver: MockSyn def test_sync_driver_releases_pooled_statement(mock_sync_driver: MockSyncDriver) -> None: """Pooled statements should be reset after dispatch execution.""" seed = "SELECT * FROM users WHERE id = ?" - mock_sync_driver.prepare_statement( - seed, (1,), statement_config=mock_sync_driver.statement_config, kwargs={} - ) + mock_sync_driver.prepare_statement(seed, (1,), statement_config=mock_sync_driver.statement_config, kwargs={}) pooled = mock_sync_driver.prepare_statement( seed, (2,), statement_config=mock_sync_driver.statement_config, kwargs={} ) diff --git a/tests/unit/core/test_pool.py b/tests/unit/core/test_pool.py index 542e13f5..fb7ba10b 100644 --- a/tests/unit/core/test_pool.py +++ b/tests/unit/core/test_pool.py @@ -3,6 +3,7 @@ import threading from queue import Queue +from typing import cast import pytest @@ -72,7 +73,7 @@ def resetter(obj: _Sentinel) -> None: def test_thread_local_pools_are_unique_per_thread() -> None: main_pool = get_sql_pool() - queue: "Queue[object]" = Queue() + queue: Queue[object] = Queue() def worker() -> None: queue.put(get_sql_pool()) @@ -91,7 +92,9 @@ def test_thread_local_pools_reuse_within_thread() -> None: def test_thread_local_pools_are_distinct_by_type() -> None: - assert get_sql_pool() is not get_processed_state_pool() + sql_pool = get_sql_pool() + processed_pool = get_processed_state_pool() + assert cast("object", sql_pool) is not cast("object", processed_pool) def test_object_pool_reuse_stability_over_iterations() -> None: @@ -114,7 +117,7 @@ def test_object_pool_reuse_stability_over_iterations() -> None: def test_object_pool_thread_isolation() -> None: """Thread-local pools should not share objects across threads.""" - queue: "Queue[ObjectPool[_Sentinel]]" = Queue() + queue: Queue[object] = Queue() def worker() -> None: queue.put(get_sql_pool()) @@ -123,4 +126,5 @@ def worker() -> None: thread.start() thread.join() - assert queue.get() is not get_sql_pool() + worker_pool = queue.get() + assert worker_pool is not get_sql_pool() diff --git a/tests/unit/core/test_statement.py b/tests/unit/core/test_statement.py index 7fcb3bd4..1452e370 100644 --- a/tests/unit/core/test_statement.py +++ b/tests/unit/core/test_statement.py @@ -243,7 +243,7 @@ def test_processed_state_pool_resets_on_release() -> None: state.compiled_sql = "SELECT 1" state.execution_parameters = [1] state.operation_type = "SELECT" - state.parameter_casts["k"] = "v" + state.parameter_casts[0] = "v" pool.release(state) @@ -275,7 +275,7 @@ def test_sql_reset_clears_state() -> None: stmt.reset() assert stmt._compiled_from_cache is False - assert stmt._processed_state is Empty + assert stmt.is_processed is False assert stmt._hash is None assert stmt._filters is filters_ref assert stmt._filters == [] diff --git a/tools/benchmark_transform.py b/tools/benchmark_transform.py index 3ccede91..6bd611e3 100644 --- a/tools/benchmark_transform.py +++ b/tools/benchmark_transform.py @@ -4,25 +4,23 @@ # Mocking enough state for _transform_cached_parameters CONFIG = ParameterStyleConfig(ParameterStyle.QMARK) -PROFILE = ParameterProfile([]) # Simplified +PROFILE = ParameterProfile([]) # Simplified PARAMS = ("note",) INPUT_NAMES = () + def bench_transform() -> None: from sqlspec.core.parameters import ParameterProcessor + proc = ParameterProcessor() start = time.perf_counter() for _ in range(10000): _ = proc._transform_cached_parameters( - PARAMS, - PROFILE, - CONFIG, - input_named_parameters=INPUT_NAMES, - is_many=False, - apply_wrap_types=False + PARAMS, PROFILE, CONFIG, input_named_parameters=INPUT_NAMES, is_many=False, apply_wrap_types=False ) time.perf_counter() - start + if __name__ == "__main__": bench_transform() From e28a9beffe04d6968bcc4b2a250386f006a89593 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 04:52:48 +0000 Subject: [PATCH 38/66] feat(driver): add fast path eligibility flag --- sqlspec/driver/_common.py | 17 +++++++++++- tests/unit/adapters/test_sync_adapters.py | 32 +++++++++++++++++++++++ 2 files changed, 48 insertions(+), 1 deletion(-) diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index eb3868fb..5c57b01c 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -800,7 +800,14 @@ class ExecutionResult(NamedTuple): class CommonDriverAttributesMixin: """Common attributes and methods for driver adapters.""" - __slots__ = ("_observability", "_statement_cache", "connection", "driver_features", "statement_config") + __slots__ = ( + "_fast_path_enabled", + "_observability", + "_statement_cache", + "connection", + "driver_features", + "statement_config", + ) connection: "Any" statement_config: "StatementConfig" driver_features: "dict[str, Any]" @@ -826,10 +833,18 @@ def __init__( self.driver_features = driver_features or {} self._observability = observability self._statement_cache: dict[str, SQL] = {} + self._fast_path_enabled = False + self._update_fast_path_flag() def attach_observability(self, runtime: "ObservabilityRuntime") -> None: """Attach or replace the observability runtime.""" self._observability = runtime + self._update_fast_path_flag() + + def _update_fast_path_flag(self) -> None: + self._fast_path_enabled = bool( + not self.statement_config.statement_transformers and self.observability.is_idle + ) @property def observability(self) -> "ObservabilityRuntime": diff --git a/tests/unit/adapters/test_sync_adapters.py b/tests/unit/adapters/test_sync_adapters.py index 9cb01661..999f3210 100644 --- a/tests/unit/adapters/test_sync_adapters.py +++ b/tests/unit/adapters/test_sync_adapters.py @@ -10,6 +10,7 @@ from sqlspec.driver import ExecutionResult from sqlspec.exceptions import NotFoundError, SQLSpecError from sqlspec.typing import Empty +from sqlspec.observability import ObservabilityConfig, ObservabilityRuntime from tests.unit.adapters.conftest import MockSyncConnection, MockSyncDriver pytestmark = pytest.mark.xdist_group("adapter_unit") @@ -40,6 +41,37 @@ def test_sync_driver_with_custom_config(mock_sync_connection: MockSyncConnection assert driver.statement_config.parameter_config.default_parameter_style == ParameterStyle.NUMERIC +def test_sync_driver_fast_path_flag_default(mock_sync_connection: MockSyncConnection) -> None: + driver = MockSyncDriver(mock_sync_connection) + + assert driver._fast_path_enabled is True + + +def test_sync_driver_fast_path_flag_disabled_by_transformer(mock_sync_connection: MockSyncConnection) -> None: + def transformer(expression: Any, context: Any) -> "tuple[Any, Any]": + return expression, context + + custom_config = StatementConfig( + dialect="sqlite", + parameter_config=ParameterStyleConfig( + default_parameter_style=ParameterStyle.QMARK, supported_parameter_styles={ParameterStyle.QMARK} + ), + statement_transformers=(transformer,), + ) + driver = MockSyncDriver(mock_sync_connection, custom_config) + + assert driver._fast_path_enabled is False + + +def test_sync_driver_fast_path_flag_disabled_by_observability(mock_sync_connection: MockSyncConnection) -> None: + driver = MockSyncDriver(mock_sync_connection) + runtime = ObservabilityRuntime(ObservabilityConfig(print_sql=True)) + + driver.attach_observability(runtime) + + assert driver._fast_path_enabled is False + + def test_sync_driver_with_cursor(mock_sync_driver: MockSyncDriver) -> None: """Test cursor context manager functionality.""" with mock_sync_driver.with_cursor(mock_sync_driver.connection) as cursor: From 576929aac97d78557b0d444a7841386c932baec8 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 04:55:44 +0000 Subject: [PATCH 39/66] feat(driver): add fast path query cache --- sqlspec/driver/_common.py | 33 +++++++++++++++++++++++++++++ tests/unit/driver/test_fast_path.py | 33 +++++++++++++++++++++++++++++ 2 files changed, 66 insertions(+) create mode 100644 tests/unit/driver/test_fast_path.py diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index 5c57b01c..fc97cc06 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -4,6 +4,7 @@ import hashlib import logging import re +from collections import OrderedDict from contextlib import suppress from time import perf_counter from typing import TYPE_CHECKING, Any, ClassVar, Final, Literal, NamedTuple, NoReturn, Protocol, cast, overload @@ -794,6 +795,36 @@ class ExecutionResult(NamedTuple): _DEFAULT_METADATA: Final = {"status_message": "OK"} +_FAST_PATH_QUERY_CACHE_SIZE: Final = 1024 + + +class CachedQuery(NamedTuple): + driver_sql: str + coercions: "tuple[Callable[[Any], Any] | None, ...]" + param_count: int + + +class _QueryCache: + __slots__ = ("_cache", "_max_size") + + def __init__(self, max_size: int) -> None: + self._cache: "OrderedDict[str, CachedQuery]" = OrderedDict() + self._max_size = max_size + + def get(self, sql: str) -> CachedQuery | None: + entry = self._cache.get(sql) + if entry is None: + return None + self._cache.move_to_end(sql) + return entry + + def set(self, sql: str, entry: CachedQuery) -> None: + if sql in self._cache: + self._cache.move_to_end(sql) + else: + if len(self._cache) >= self._max_size: + self._cache.popitem(last=False) + self._cache[sql] = entry @mypyc_attr(allow_interpreted_subclasses=True) @@ -803,6 +834,7 @@ class CommonDriverAttributesMixin: __slots__ = ( "_fast_path_enabled", "_observability", + "_query_cache", "_statement_cache", "connection", "driver_features", @@ -833,6 +865,7 @@ def __init__( self.driver_features = driver_features or {} self._observability = observability self._statement_cache: dict[str, SQL] = {} + self._query_cache = _QueryCache(_FAST_PATH_QUERY_CACHE_SIZE) self._fast_path_enabled = False self._update_fast_path_flag() diff --git a/tests/unit/driver/test_fast_path.py b/tests/unit/driver/test_fast_path.py new file mode 100644 index 00000000..ef38acfa --- /dev/null +++ b/tests/unit/driver/test_fast_path.py @@ -0,0 +1,33 @@ +# pyright: reportPrivateImportUsage = false, reportPrivateUsage = false +"""Unit tests for fast-path query cache behavior.""" + +from sqlspec.driver._common import CachedQuery, _QueryCache + + +def test_query_cache_lru_eviction() -> None: + cache = _QueryCache(max_size=2) + + cache.set("a", CachedQuery("SQL_A", (), 1)) + cache.set("b", CachedQuery("SQL_B", (), 1)) + assert cache.get("a") is not None + + cache.set("c", CachedQuery("SQL_C", (), 1)) + + assert cache.get("b") is None + assert cache.get("a") is not None + assert cache.get("c") is not None + + +def test_query_cache_update_moves_to_end() -> None: + cache = _QueryCache(max_size=2) + + cache.set("a", CachedQuery("SQL_A", (), 1)) + cache.set("b", CachedQuery("SQL_B", (), 1)) + cache.set("a", CachedQuery("SQL_A2", (), 2)) + cache.set("c", CachedQuery("SQL_C", (), 1)) + + assert cache.get("b") is None + entry = cache.get("a") + assert entry is not None + assert entry.driver_sql == "SQL_A2" + assert entry.param_count == 2 From fb76add050628836fe8b60b9a7d5cf206e8c21bc Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 05:02:32 +0000 Subject: [PATCH 40/66] feat(driver): add fast path execution helper --- sqlspec/driver/_common.py | 93 ++++++++++++++++++++++++++++- tests/unit/driver/test_fast_path.py | 60 ++++++++++++++++--- 2 files changed, 142 insertions(+), 11 deletions(-) diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index fc97cc06..a740be63 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -27,6 +27,8 @@ split_sql_script, ) from sqlspec.core._pool import get_sql_pool +from sqlspec.core.compiler import OperationProfile, OperationType +from sqlspec.core.parameters import ParameterProcessor, ParameterProfile from sqlspec.core.metrics import StackExecutionMetrics from sqlspec.core.parameters import structural_fingerprint, value_fingerprint from sqlspec.data_dictionary._loader import get_data_dictionary_loader @@ -60,6 +62,7 @@ __all__ = ( + "CachedQuery", "DEFAULT_EXECUTION_RESULT", "EXEC_CURSOR_RESULT", "EXEC_ROWCOUNT_OVERRIDE", @@ -799,8 +802,13 @@ class ExecutionResult(NamedTuple): class CachedQuery(NamedTuple): - driver_sql: str - coercions: "tuple[Callable[[Any], Any] | None, ...]" + compiled_sql: str + parameter_profile: "ParameterProfile" + input_named_parameters: "tuple[str, ...]" + applied_wrap_types: bool + parameter_casts: "dict[int, str]" + operation_type: "OperationType" + operation_profile: "OperationProfile" param_count: int @@ -955,6 +963,86 @@ def _release_pooled_statement(self, statement: "SQL") -> None: if getattr(statement, "_pooled", False): get_sql_pool().release(statement) + def _fast_rebind(self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQuery") -> "ConvertedParameters": + processor = ParameterProcessor( + converter=self.statement_config.parameter_converter, + validator=self.statement_config.parameter_validator, + cache_max_size=0, + validator_cache_max_size=0, + ) + return processor._transform_cached_parameters( # pyright: ignore[reportPrivateUsage] + params, + cached.parameter_profile, + self.statement_config.parameter_config, + input_named_parameters=cached.input_named_parameters, + is_many=False, + apply_wrap_types=cached.applied_wrap_types, + ) + + def _build_fast_statement( + self, + sql: str, + params: "tuple[Any, ...] | list[Any]", + cached: "CachedQuery", + execution_parameters: "ConvertedParameters", + ) -> "SQL": + statement = get_sql_pool().acquire() + statement._raw_sql = sql + statement._raw_expression = None + statement._statement_config = self.statement_config + statement._dialect = statement._normalize_dialect(self.statement_config.dialect) + statement._is_many = False + statement._is_script = False + statement._original_parameters = () + statement._pooled = True + statement._compiled_from_cache = False + statement._hash = None + statement._filters = [] + statement._named_parameters = {} + statement._positional_parameters = list(params) + statement._sql_param_counters = {} + statement._processed_state = statement._build_processed_state( + compiled_sql=cached.compiled_sql, + execution_parameters=execution_parameters, + parsed_expression=None, + operation_type=cached.operation_type, + input_named_parameters=cached.input_named_parameters, + applied_wrap_types=cached.applied_wrap_types, + filter_hash=0, + parameter_fingerprint=None, + parameter_casts=cached.parameter_casts, + parameter_profile=cached.parameter_profile, + operation_profile=cached.operation_profile, + validation_errors=[], + is_many=False, + ) + return statement + + def _try_fast_execute(self, statement: str, params: "tuple[Any, ...] | list[Any]") -> "SQLResult | None": + if not self._fast_path_enabled: + return None + if self.statement_config.parameter_config.needs_static_script_compilation: + return None + cached = self._query_cache.get(statement) + if cached is None: + return None + if cached.param_count != len(params): + return None + if isinstance(params, list) and params and isinstance(params[0], (tuple, list, dict)) and len(params) > 1: + return None + + rebound_params = self._fast_rebind(params, cached) + compiled_sql = cached.compiled_sql + output_transformer = self.statement_config.output_transformer + if output_transformer: + compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) + + fast_statement = self._build_fast_statement(statement, params, cached, rebound_params) + return self._execute_raw(fast_statement, compiled_sql, rebound_params) + + def _execute_raw(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": + raise NotImplementedError + @overload @staticmethod def to_schema(data: "list[dict[str, Any]]", *, schema_type: "type[SchemaT]") -> "list[SchemaT]": ... @@ -1766,3 +1854,4 @@ def _add_count_over_column(self, original_sql: "SQL", alias: str = "_total_count statement_config=original_sql.statement_config, **original_sql.named_parameters, ) + "_QueryCache", diff --git a/tests/unit/driver/test_fast_path.py b/tests/unit/driver/test_fast_path.py index ef38acfa..7525bed0 100644 --- a/tests/unit/driver/test_fast_path.py +++ b/tests/unit/driver/test_fast_path.py @@ -1,17 +1,29 @@ # pyright: reportPrivateImportUsage = false, reportPrivateUsage = false """Unit tests for fast-path query cache behavior.""" -from sqlspec.driver._common import CachedQuery, _QueryCache +from typing import Any + +from sqlspec.core import ParameterStyle, ParameterStyleConfig, StatementConfig +from sqlspec.core.compiler import OperationProfile +from sqlspec.core.parameters import ParameterInfo, ParameterProfile +from sqlspec.driver._common import CachedQuery, CommonDriverAttributesMixin, _QueryCache + + +class _FakeDriver(CommonDriverAttributesMixin): + __slots__ = () + + def _execute_raw(self, statement: Any, sql: str, params: Any) -> Any: + return (statement, sql, params) def test_query_cache_lru_eviction() -> None: cache = _QueryCache(max_size=2) - cache.set("a", CachedQuery("SQL_A", (), 1)) - cache.set("b", CachedQuery("SQL_B", (), 1)) + cache.set("a", CachedQuery("SQL_A", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) + cache.set("b", CachedQuery("SQL_B", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) assert cache.get("a") is not None - cache.set("c", CachedQuery("SQL_C", (), 1)) + cache.set("c", CachedQuery("SQL_C", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) assert cache.get("b") is None assert cache.get("a") is not None @@ -21,13 +33,43 @@ def test_query_cache_lru_eviction() -> None: def test_query_cache_update_moves_to_end() -> None: cache = _QueryCache(max_size=2) - cache.set("a", CachedQuery("SQL_A", (), 1)) - cache.set("b", CachedQuery("SQL_B", (), 1)) - cache.set("a", CachedQuery("SQL_A2", (), 2)) - cache.set("c", CachedQuery("SQL_C", (), 1)) + cache.set("a", CachedQuery("SQL_A", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) + cache.set("b", CachedQuery("SQL_B", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) + cache.set("a", CachedQuery("SQL_A2", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 2)) + cache.set("c", CachedQuery("SQL_C", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) assert cache.get("b") is None entry = cache.get("a") assert entry is not None - assert entry.driver_sql == "SQL_A2" + assert entry.compiled_sql == "SQL_A2" assert entry.param_count == 2 + + +def test_try_fast_execute_cache_hit_rebinds() -> None: + config = StatementConfig( + parameter_config=ParameterStyleConfig( + default_parameter_style=ParameterStyle.QMARK, supported_parameter_styles={ParameterStyle.QMARK} + ) + ) + driver = _FakeDriver(object(), config) + + profile = ParameterProfile((ParameterInfo(None, ParameterStyle.QMARK, 0, 0, "?"),)) + cached = CachedQuery( + compiled_sql="SELECT * FROM t WHERE id = ?", + parameter_profile=profile, + input_named_parameters=(), + applied_wrap_types=False, + parameter_casts={}, + operation_type="SELECT", + operation_profile=OperationProfile(returns_rows=True, modifies_rows=False), + param_count=1, + ) + driver._query_cache.set("SELECT * FROM t WHERE id = ?", cached) + + result = driver._try_fast_execute("SELECT * FROM t WHERE id = ?", (1,)) + + assert result is not None + statement, sql, params = result + assert sql == "SELECT * FROM t WHERE id = ?" + assert params == (1,) + assert statement.operation_type == "SELECT" From 189679b445fd476423fd2e36cda821c7329dcacb Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 05:18:29 +0000 Subject: [PATCH 41/66] feat(driver): add fast-path execute routing --- sqlspec/driver/_async.py | 92 +++++++++++++++++++++++++++++ sqlspec/driver/_sync.py | 32 ++++++++++ tests/unit/driver/test_fast_path.py | 76 ++++++++++++++++++++++++ 3 files changed, 200 insertions(+) diff --git a/sqlspec/driver/_async.py b/sqlspec/driver/_async.py index 4113a739..9d5337f7 100644 --- a/sqlspec/driver/_async.py +++ b/sqlspec/driver/_async.py @@ -302,6 +302,87 @@ async def dispatch_special_handling(self, cursor: Any, statement: "SQL") -> "SQL _ = (cursor, statement) return None + async def _try_fast_execute_async( + self, statement: str, params: "tuple[Any, ...] | list[Any]" + ) -> "SQLResult | None": + if not self._fast_path_enabled: + return None + if self.statement_config.parameter_config.needs_static_script_compilation: + return None + cached = self._query_cache.get(statement) + if cached is None: + return None + if cached.param_count != len(params): + return None + if isinstance(params, list) and params and isinstance(params[0], (tuple, list, dict)) and len(params) > 1: + return None + + rebound_params = self._fast_rebind(params, cached) + compiled_sql = cached.compiled_sql + output_transformer = self.statement_config.output_transformer + if output_transformer: + compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) + + fast_statement = self._build_fast_statement(statement, params, cached, rebound_params) + return await self._execute_raw_async(fast_statement, compiled_sql, rebound_params) + + async def _execute_raw_async(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": + _ = (sql, params) + exc_handler = self.handle_database_exceptions() + cursor_manager = self.with_cursor(self.connection) + cursor: Any | None = None + exc: Exception | None = None + exc_handler_entered = False + cursor_entered = False + result: "SQLResult | None" = None + + try: + await exc_handler.__aenter__() + exc_handler_entered = True + cursor = await cursor_manager.__aenter__() + cursor_entered = True + special_result = await self.dispatch_special_handling(cursor, statement) + if special_result is not None: + result = special_result + elif statement.is_script: + execution_result = await self.dispatch_execute_script(cursor, statement) + result = self.build_statement_result(statement, execution_result) + elif statement.is_many: + execution_result = await self.dispatch_execute_many(cursor, statement) + result = self.build_statement_result(statement, execution_result) + else: + execution_result = await self.dispatch_execute(cursor, statement) + result = self.build_statement_result(statement, execution_result) + except Exception as err: + exc = err + finally: + if cursor_entered: + if exc is None: + await cursor_manager.__aexit__(None, None, None) + else: + await cursor_manager.__aexit__(type(exc), exc, exc.__traceback__) + if exc_handler_entered: + if exc is None: + await exc_handler.__aexit__(None, None, None) + else: + await exc_handler.__aexit__(type(exc), exc, exc.__traceback__) + + try: + if exc is not None: + mapped_exc = exc_handler.pending_exception or exc + if exc_handler.pending_exception is not None: + raise mapped_exc from exc + raise exc + + if exc_handler.pending_exception is not None: + mapped_exc = exc_handler.pending_exception + raise mapped_exc from None + + assert result is not None + return result + finally: + self._release_pooled_statement(statement) + # ───────────────────────────────────────────────────────────────────────────── # TRANSACTION MANAGEMENT - Required Abstract Methods # ───────────────────────────────────────────────────────────────────────────── @@ -350,6 +431,17 @@ async def execute( **kwargs: Any, ) -> "SQLResult": """Execute a statement with parameter handling.""" + if ( + self._fast_path_enabled + and (statement_config is None or statement_config is self.statement_config) + and isinstance(statement, str) + and len(parameters) == 1 + and isinstance(parameters[0], (tuple, list)) + and not kwargs + ): + fast_result = await self._try_fast_execute_async(statement, parameters[0]) + if fast_result is not None: + return fast_result sql_statement = self.prepare_statement( statement, parameters, statement_config=statement_config or self.statement_config, kwargs=kwargs ) diff --git a/sqlspec/driver/_sync.py b/sqlspec/driver/_sync.py index ce1afb1a..5bd72d7d 100644 --- a/sqlspec/driver/_sync.py +++ b/sqlspec/driver/_sync.py @@ -302,6 +302,27 @@ def dispatch_special_handling(self, cursor: Any, statement: "SQL") -> "SQLResult _ = (cursor, statement) return None + def _execute_raw(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": + _ = (sql, params) + exc_handler = self.handle_database_exceptions() + try: + try: + with exc_handler, self.with_cursor(self.connection) as cursor: + special_result = self.dispatch_special_handling(cursor, statement) + if special_result is not None: + return special_result + execution_result = self.dispatch_execute(cursor, statement) + return self.build_statement_result(statement, execution_result) + except Exception as exc: + if exc_handler.pending_exception is not None: + raise exc_handler.pending_exception from exc + raise + finally: + if exc_handler.pending_exception is not None: + raise exc_handler.pending_exception from None + finally: + self._release_pooled_statement(statement) + # ───────────────────────────────────────────────────────────────────────────── # TRANSACTION MANAGEMENT - Required Abstract Methods # ───────────────────────────────────────────────────────────────────────────── @@ -350,6 +371,17 @@ def execute( **kwargs: Any, ) -> "SQLResult": """Execute a statement with parameter handling.""" + if ( + self._fast_path_enabled + and (statement_config is None or statement_config is self.statement_config) + and isinstance(statement, str) + and len(parameters) == 1 + and isinstance(parameters[0], (tuple, list)) + and not kwargs + ): + fast_result = self._try_fast_execute(statement, parameters[0]) + if fast_result is not None: + return fast_result sql_statement = self.prepare_statement( statement, parameters, statement_config=statement_config or self.statement_config, kwargs=kwargs ) diff --git a/tests/unit/driver/test_fast_path.py b/tests/unit/driver/test_fast_path.py index 7525bed0..f2328f52 100644 --- a/tests/unit/driver/test_fast_path.py +++ b/tests/unit/driver/test_fast_path.py @@ -3,6 +3,8 @@ from typing import Any +import pytest + from sqlspec.core import ParameterStyle, ParameterStyleConfig, StatementConfig from sqlspec.core.compiler import OperationProfile from sqlspec.core.parameters import ParameterInfo, ParameterProfile @@ -73,3 +75,77 @@ def test_try_fast_execute_cache_hit_rebinds() -> None: assert sql == "SELECT * FROM t WHERE id = ?" assert params == (1,) assert statement.operation_type == "SELECT" + + +def test_execute_uses_fast_path_when_eligible(mock_sync_driver, monkeypatch) -> None: + sentinel = object() + called: dict[str, object] = {} + + def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: + called["args"] = (statement, params) + return sentinel + + monkeypatch.setattr(mock_sync_driver, "_try_fast_execute", _fake_try) + mock_sync_driver._fast_path_enabled = True + + result = mock_sync_driver.execute("SELECT ?", (1,)) + + assert result is sentinel + assert called["args"] == ("SELECT ?", (1,)) + + +def test_execute_skips_fast_path_with_statement_config_override(mock_sync_driver, monkeypatch) -> None: + called = False + + def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: + nonlocal called + called = True + return object() + + monkeypatch.setattr(mock_sync_driver, "_try_fast_execute", _fake_try) + mock_sync_driver._fast_path_enabled = True + + statement_config = mock_sync_driver.statement_config.replace() + result = mock_sync_driver.execute("SELECT ?", (1,), statement_config=statement_config) + + assert called is False + assert result.operation_type == "SELECT" + + +@pytest.mark.asyncio +async def test_async_execute_uses_fast_path_when_eligible(mock_async_driver, monkeypatch) -> None: + sentinel = object() + called: dict[str, object] = {} + + async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: + called["args"] = (statement, params) + return sentinel + + monkeypatch.setattr(mock_async_driver, "_try_fast_execute_async", _fake_try) + mock_async_driver._fast_path_enabled = True + + result = await mock_async_driver.execute("SELECT ?", (1,)) + + assert result is sentinel + assert called["args"] == ("SELECT ?", (1,)) + + +@pytest.mark.asyncio +async def test_async_execute_skips_fast_path_with_statement_config_override( + mock_async_driver, monkeypatch +) -> None: + called = False + + async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: + nonlocal called + called = True + return object() + + monkeypatch.setattr(mock_async_driver, "_try_fast_execute_async", _fake_try) + mock_async_driver._fast_path_enabled = True + + statement_config = mock_async_driver.statement_config.replace() + result = await mock_async_driver.execute("SELECT ?", (1,), statement_config=statement_config) + + assert called is False + assert result.operation_type == "SELECT" From 64ba8b77508b1c2c819be94675f8ae551fa5e716 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 05:25:05 +0000 Subject: [PATCH 42/66] feat(driver): cache fast-path artifacts --- sqlspec/driver/_common.py | 36 +++++++++++++++++++++++++++++ tests/unit/driver/test_fast_path.py | 29 +++++++++++++++++++++++ 2 files changed, 65 insertions(+) diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index a740be63..110657bb 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -1043,6 +1043,38 @@ def _try_fast_execute(self, statement: str, params: "tuple[Any, ...] | list[Any] def _execute_raw(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": raise NotImplementedError + def _maybe_cache_fast_path(self, statement: "SQL") -> None: + if not self._fast_path_enabled: + return + if statement.statement_config is not self.statement_config: + return + if statement.is_script or statement.is_many: + return + if statement.raw_expression is not None: + return + if not statement.raw_sql: + return + if statement.statement_config.parameter_config.needs_static_script_compilation: + return + if len(statement.get_filters_view()) > 0: + return + if not statement.is_processed: + return + + processed = cast("ProcessedState", statement.get_processed_state()) + param_profile = processed.parameter_profile + cached = CachedQuery( + compiled_sql=processed.compiled_sql, + parameter_profile=param_profile, + input_named_parameters=processed.input_named_parameters, + applied_wrap_types=processed.applied_wrap_types, + parameter_casts=dict(processed.parameter_casts), + operation_type=processed.operation_type, + operation_profile=processed.operation_profile, + param_count=param_profile.total_count, + ) + self._query_cache.set(statement.raw_sql, cached) + @overload @staticmethod def to_schema(data: "list[dict[str, Any]]", *, schema_type: "type[SchemaT]") -> "list[SchemaT]": ... @@ -1533,6 +1565,7 @@ def _get_compiled_statement( cached_statement = CachedStatement( compiled_sql=compiled_sql, parameters=prepared_parameters, expression=statement.expression ) + self._maybe_cache_fast_path(statement) return cached_statement, prepared_parameters processed = statement.get_processed_state() @@ -1547,6 +1580,7 @@ def _get_compiled_statement( parameters=prepared_parameters, expression=processed.parsed_expression, ) + self._maybe_cache_fast_path(statement) return cached_statement, prepared_parameters # Materialize iterators before cache key generation to prevent exhaustion. @@ -1585,6 +1619,7 @@ def _get_compiled_statement( parameters=prepared_parameters, expression=cached_result.expression, ) + self._maybe_cache_fast_path(statement) return updated_cached, prepared_parameters # Compile the statement directly (no need for prepare_statement indirection) @@ -1602,6 +1637,7 @@ def _get_compiled_statement( if cache_key is not None and cache is not None: cache.put_statement(cache_key, cached_statement, dialect_key) + self._maybe_cache_fast_path(statement) return cached_statement, prepared_parameters def _generate_compilation_cache_key( diff --git a/tests/unit/driver/test_fast_path.py b/tests/unit/driver/test_fast_path.py index f2328f52..f7126d73 100644 --- a/tests/unit/driver/test_fast_path.py +++ b/tests/unit/driver/test_fast_path.py @@ -112,6 +112,20 @@ def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: assert result.operation_type == "SELECT" +def test_execute_populates_fast_path_cache_on_normal_path(mock_sync_driver) -> None: + mock_sync_driver._fast_path_enabled = True + + assert mock_sync_driver._query_cache.get("SELECT ?") is None + + result = mock_sync_driver.execute("SELECT ?", (1,)) + + cached = mock_sync_driver._query_cache.get("SELECT ?") + assert cached is not None + assert cached.param_count == 1 + assert cached.operation_type == "SELECT" + assert result.operation_type == "SELECT" + + @pytest.mark.asyncio async def test_async_execute_uses_fast_path_when_eligible(mock_async_driver, monkeypatch) -> None: sentinel = object() @@ -149,3 +163,18 @@ async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> obje assert called is False assert result.operation_type == "SELECT" + + +@pytest.mark.asyncio +async def test_async_execute_populates_fast_path_cache_on_normal_path(mock_async_driver) -> None: + mock_async_driver._fast_path_enabled = True + + assert mock_async_driver._query_cache.get("SELECT ?") is None + + result = await mock_async_driver.execute("SELECT ?", (1,)) + + cached = mock_async_driver._query_cache.get("SELECT ?") + assert cached is not None + assert cached.param_count == 1 + assert cached.operation_type == "SELECT" + assert result.operation_type == "SELECT" From bada0da9d1bf0d2825c4da39e0984e9339a33fc3 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 05:28:20 +0000 Subject: [PATCH 43/66] feat(bench): add fast-path benchmark --- benchmark_repro.py | 65 +++++++++++++++++++++++++++++ tests/unit/driver/test_fast_path.py | 18 ++++++++ 2 files changed, 83 insertions(+) diff --git a/benchmark_repro.py b/benchmark_repro.py index 48e1a161..d95376f4 100644 --- a/benchmark_repro.py +++ b/benchmark_repro.py @@ -50,6 +50,21 @@ def bench_sqlspec(db_path: Path) -> None: session.execute("insert into notes (body) values (?)", (f"note {i}",)) +def bench_sqlspec_fast_path(db_path: Path) -> None: + obs_config = ObservabilityConfig( + telemetry=TelemetryConfig(enable_spans=False), + logging=LoggingConfig(include_sql_hash=False, include_trace_context=False), + print_sql=False, + ) + spec = SQLSpec(observability_config=obs_config) + config = spec.add_config(SqliteConfig(connection_config={"database": str(db_path)})) + with spec.provide_session(config) as session: + session.execute("create table if not exists notes (id integer primary key, body text)") + session.execute("insert into notes (body) values (?)", ("warmup",)) + for i in range(ROWS): + session.execute("insert into notes (body) values (?)", (f"note {i}",)) + + # ------------------------- # Timing helper # ------------------------- @@ -88,8 +103,10 @@ def run_benchmark_allocations(fn: "Callable[[Path], None]") -> "tuple[int, int]" "bench_sqlite_sqlglot_copy", "bench_sqlite_sqlglot_nocache", "bench_sqlspec", + "bench_sqlspec_fast_path", "bench_sqlspec_dict", "profile_cache_hit_compile_calls", + "profile_fast_path_hit_rate", "run_benchmark", ) @@ -232,6 +249,44 @@ def wrapped(*args: object, **kwargs: object) -> object: return calls +def profile_fast_path_hit_rate(db_path: Path) -> float: + obs_config = ObservabilityConfig( + telemetry=TelemetryConfig(enable_spans=False), + logging=LoggingConfig(include_sql_hash=False, include_trace_context=False), + print_sql=False, + ) + spec = SQLSpec(observability_config=obs_config) + config = spec.add_config(SqliteConfig(connection_config={"database": str(db_path)})) + + from sqlspec.driver import SyncDriverAdapterBase + + hits = 0 + calls = 0 + original = SyncDriverAdapterBase._try_fast_execute + + def wrapped(self: SyncDriverAdapterBase, statement: str, params: tuple[object, ...] | list[object]) -> object: + nonlocal hits, calls + calls += 1 + result = original(self, statement, params) + if result is not None: + hits += 1 + return result + + with spec.provide_session(config) as session: + session.execute("create table if not exists notes (id integer primary key, body text)") + SyncDriverAdapterBase._try_fast_execute = wrapped + try: + session.execute("insert into notes (body) values (?)", ("warmup",)) + for i in range(ROWS): + session.execute("insert into notes (body) values (?)", (f"note {i}",)) + finally: + SyncDriverAdapterBase._try_fast_execute = original + + if not calls: + return 0.0 + return hits / calls + + def assert_compile_bypass(db_path: Path) -> None: """Assert compile is bypassed on cache hits after initial insert.""" calls = profile_cache_hit_compile_calls(db_path) @@ -258,5 +313,15 @@ def assert_compile_bypass(db_path: Path) -> None: raw_time = run_benchmark(bench_raw_sqlite, "raw sqlite3") sqlspec_time = run_benchmark(bench_sqlspec, "sqlspec") + fast_path_time = run_benchmark(bench_sqlspec_fast_path, "sqlspec fast path") slowdown = sqlspec_time / raw_time + fast_path_slowdown = fast_path_time / raw_time + + with tempfile.TemporaryDirectory() as d: + hit_rate = profile_fast_path_hit_rate(Path(d) / "fast_path_hits.db") + + print(f"raw sqlite3: {raw_time:.4f}s") + print(f"sqlspec: {sqlspec_time:.4f}s ({slowdown:.2f}x)") + print(f"sqlspec fast path: {fast_path_time:.4f}s ({fast_path_slowdown:.2f}x)") + print(f"fast path hit rate: {hit_rate:.2%}") diff --git a/tests/unit/driver/test_fast_path.py b/tests/unit/driver/test_fast_path.py index f7126d73..4e6b7229 100644 --- a/tests/unit/driver/test_fast_path.py +++ b/tests/unit/driver/test_fast_path.py @@ -1,6 +1,7 @@ # pyright: reportPrivateImportUsage = false, reportPrivateUsage = false """Unit tests for fast-path query cache behavior.""" +from concurrent.futures import ThreadPoolExecutor from typing import Any import pytest @@ -178,3 +179,20 @@ async def test_async_execute_populates_fast_path_cache_on_normal_path(mock_async assert cached.param_count == 1 assert cached.operation_type == "SELECT" assert result.operation_type == "SELECT" + + +def test_query_cache_thread_safety() -> None: + cache = _QueryCache(max_size=32) + cached = CachedQuery("SQL", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 0) + for idx in range(16): + cache.set(str(idx), cached) + + def worker(seed: int) -> None: + for i in range(200): + key = str((seed + i) % 16) + cache.get(key) + if i % 5 == 0: + cache.set(key, cached) + + with ThreadPoolExecutor(max_workers=4) as executor: + list(executor.map(worker, range(4))) From 6945d3abd3263882b8fb2d1610ea91fd90926677 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 05:38:29 +0000 Subject: [PATCH 44/66] feat(driver): use raw sqlite fast path --- sqlspec/adapters/aiosqlite/driver.py | 59 +++++++++++++++++++++++++++- sqlspec/adapters/sqlite/driver.py | 35 ++++++++++++++++- 2 files changed, 92 insertions(+), 2 deletions(-) diff --git a/sqlspec/adapters/aiosqlite/driver.py b/sqlspec/adapters/aiosqlite/driver.py index 57db1b60..d9f6f32a 100644 --- a/sqlspec/adapters/aiosqlite/driver.py +++ b/sqlspec/adapters/aiosqlite/driver.py @@ -26,7 +26,7 @@ if TYPE_CHECKING: from sqlspec.adapters.aiosqlite._typing import AiosqliteConnection - from sqlspec.core import SQL, StatementConfig + from sqlspec.core import SQL, SQLResult, StatementConfig from sqlspec.driver import ExecutionResult from sqlspec.storage import StorageBridgeJob, StorageDestination, StorageFormat, StorageTelemetry @@ -119,6 +119,63 @@ def __init__( # CORE DISPATCH METHODS # ───────────────────────────────────────────────────────────────────────────── + async def _execute_raw_async(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": + exc_handler = self.handle_database_exceptions() + cursor_manager = self.with_cursor(self.connection) + cursor: "aiosqlite.Cursor | None" = None + exc: Exception | None = None + exc_handler_entered = False + cursor_entered = False + result: "SQLResult | None" = None + + try: + await exc_handler.__aenter__() + exc_handler_entered = True + cursor = await cursor_manager.__aenter__() + cursor_entered = True + await cursor.execute(sql, normalize_execute_parameters(params)) + + if statement.returns_rows(): + fetched_data = await cursor.fetchall() + data, column_names, row_count = collect_rows(cast("list[Any]", fetched_data), cursor.description) + execution_result = self.create_execution_result( + cursor, selected_data=data, column_names=column_names, data_row_count=row_count, is_select_result=True + ) + else: + affected_rows = resolve_rowcount(cursor) + execution_result = self.create_execution_result(cursor, rowcount_override=affected_rows) + + result = self.build_statement_result(statement, execution_result) + except Exception as err: + exc = err + finally: + if cursor_entered: + if exc is None: + await cursor_manager.__aexit__(None, None, None) + else: + await cursor_manager.__aexit__(type(exc), exc, exc.__traceback__) + if exc_handler_entered: + if exc is None: + await exc_handler.__aexit__(None, None, None) + else: + await exc_handler.__aexit__(type(exc), exc, exc.__traceback__) + + try: + if exc is not None: + mapped_exc = exc_handler.pending_exception or exc + if exc_handler.pending_exception is not None: + raise mapped_exc from exc + raise exc + + if exc_handler.pending_exception is not None: + mapped_exc = exc_handler.pending_exception + raise mapped_exc from None + + assert result is not None + return result + finally: + self._release_pooled_statement(statement) + async def dispatch_execute(self, cursor: "aiosqlite.Cursor", statement: "SQL") -> "ExecutionResult": """Execute single SQL statement.""" sql, prepared_parameters = self._get_compiled_sql(statement, self.statement_config) diff --git a/sqlspec/adapters/sqlite/driver.py b/sqlspec/adapters/sqlite/driver.py index 15973a6d..842da685 100644 --- a/sqlspec/adapters/sqlite/driver.py +++ b/sqlspec/adapters/sqlite/driver.py @@ -25,7 +25,7 @@ if TYPE_CHECKING: from sqlspec.adapters.sqlite._typing import SqliteConnection - from sqlspec.core import SQL, StatementConfig + from sqlspec.core import SQL, SQLResult, StatementConfig from sqlspec.driver import ExecutionResult from sqlspec.storage import StorageBridgeJob, StorageDestination, StorageFormat, StorageTelemetry @@ -134,6 +134,39 @@ def __init__( # CORE DISPATCH METHODS # ───────────────────────────────────────────────────────────────────────────── + def _execute_raw(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": + exc_handler = self.handle_database_exceptions() + try: + try: + with exc_handler, self.with_cursor(self.connection) as cursor: + cursor.execute(sql, normalize_execute_parameters(params)) + + if statement.returns_rows(): + fetched_data = cursor.fetchall() + data, column_names, row_count = collect_rows(fetched_data, cursor.description) + + execution_result = self.create_execution_result( + cursor, + selected_data=data, + column_names=column_names, + data_row_count=row_count, + is_select_result=True, + ) + return self.build_statement_result(statement, execution_result) + + affected_rows = resolve_rowcount(cursor) + execution_result = self.create_execution_result(cursor, rowcount_override=affected_rows) + return self.build_statement_result(statement, execution_result) + except Exception as exc: + if exc_handler.pending_exception is not None: + raise exc_handler.pending_exception from exc + raise + finally: + if exc_handler.pending_exception is not None: + raise exc_handler.pending_exception from None + finally: + self._release_pooled_statement(statement) + def dispatch_execute(self, cursor: "sqlite3.Cursor", statement: "SQL") -> "ExecutionResult": """Execute single SQL statement. From 2a6f547daab4d5698cc7051f3cdfc4888cbe6e0d Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 14:34:48 +0000 Subject: [PATCH 45/66] feat(driver): add fast-path binder hook --- sqlspec/driver/_common.py | 22 +++++++++++++++- tests/unit/driver/test_fast_path.py | 40 +++++++++++++++++++++++++++++ 2 files changed, 61 insertions(+), 1 deletion(-) diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index 110657bb..e8a8311c 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -840,6 +840,7 @@ class CommonDriverAttributesMixin: """Common attributes and methods for driver adapters.""" __slots__ = ( + "_fast_path_binder", "_fast_path_enabled", "_observability", "_query_cache", @@ -875,6 +876,12 @@ def __init__( self._statement_cache: dict[str, SQL] = {} self._query_cache = _QueryCache(_FAST_PATH_QUERY_CACHE_SIZE) self._fast_path_enabled = False + self._fast_path_binder: ( + "Callable[[Any, ParameterProfile, Any, tuple[str, ...], bool, bool], ConvertedParameters] | None" + ) = None + binder = self.driver_features.get("fast_path_binder") + if binder is not None and callable(binder): + self._fast_path_binder = binder self._update_fast_path_flag() def attach_observability(self, runtime: "ObservabilityRuntime") -> None: @@ -964,6 +971,19 @@ def _release_pooled_statement(self, statement: "SQL") -> None: get_sql_pool().release(statement) def _fast_rebind(self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQuery") -> "ConvertedParameters": + binder = self._fast_path_binder + if binder is not None: + return binder( + params, + cached.parameter_profile, + self.statement_config.parameter_config, + cached.input_named_parameters, + False, + cached.applied_wrap_types, + ) + config = self.statement_config.parameter_config + if not cached.input_named_parameters and not cached.applied_wrap_types and not config.type_coercion_map: + return params processor = ParameterProcessor( converter=self.statement_config.parameter_converter, validator=self.statement_config.parameter_validator, @@ -973,7 +993,7 @@ def _fast_rebind(self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQue return processor._transform_cached_parameters( # pyright: ignore[reportPrivateUsage] params, cached.parameter_profile, - self.statement_config.parameter_config, + config, input_named_parameters=cached.input_named_parameters, is_many=False, apply_wrap_types=cached.applied_wrap_types, diff --git a/tests/unit/driver/test_fast_path.py b/tests/unit/driver/test_fast_path.py index 4e6b7229..dd108e46 100644 --- a/tests/unit/driver/test_fast_path.py +++ b/tests/unit/driver/test_fast_path.py @@ -78,6 +78,46 @@ def test_try_fast_execute_cache_hit_rebinds() -> None: assert statement.operation_type == "SELECT" +def test_fast_path_binder_override() -> None: + config = StatementConfig( + parameter_config=ParameterStyleConfig( + default_parameter_style=ParameterStyle.QMARK, supported_parameter_styles={ParameterStyle.QMARK} + ) + ) + + def binder( + params: Any, + profile: ParameterProfile, + config: Any, + input_named_parameters: tuple[str, ...], + is_many: bool, + apply_wrap_types: bool, + ) -> Any: + _ = (params, profile, config, input_named_parameters, is_many, apply_wrap_types) + return ("bound",) + + driver = _FakeDriver(object(), config, driver_features={"fast_path_binder": binder}) + driver._fast_path_enabled = True + + cached = CachedQuery( + compiled_sql="SELECT * FROM t WHERE id = ?", + parameter_profile=ParameterProfile.empty(), + input_named_parameters=(), + applied_wrap_types=False, + parameter_casts={}, + operation_type="SELECT", + operation_profile=OperationProfile(returns_rows=True, modifies_rows=False), + param_count=1, + ) + driver._query_cache.set("SELECT * FROM t WHERE id = ?", cached) + + result = driver._try_fast_execute("SELECT * FROM t WHERE id = ?", (1,)) + + assert result is not None + _, _, params = result + assert params == ("bound",) + + def test_execute_uses_fast_path_when_eligible(mock_sync_driver, monkeypatch) -> None: sentinel = object() called: dict[str, object] = {} From aac62ab0952f4c2be614914fed7be246752a36fd Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 16:09:21 +0000 Subject: [PATCH 46/66] feat(config): auto-enable sqlspec_rs binder --- sqlspec/_typing.py | 15 +++++++++++++++ sqlspec/config.py | 20 ++++++++++++++++++++ sqlspec/typing.py | 2 ++ 3 files changed, 37 insertions(+) diff --git a/sqlspec/_typing.py b/sqlspec/_typing.py index 7f8c23be..b5547f92 100644 --- a/sqlspec/_typing.py +++ b/sqlspec/_typing.py @@ -617,6 +617,19 @@ def labels(self, *labelvalues: str, **labelkwargs: str) -> _MetricInstance: ALLOYDB_CONNECTOR_INSTALLED = dependency_flag("google.cloud.alloydb.connector") NANOID_INSTALLED = dependency_flag("fastnanoid") UUID_UTILS_INSTALLED = dependency_flag("uuid_utils") +SQLSPEC_RS_INSTALLED = dependency_flag("sqlspec_rs") + + +def get_sqlspec_rs() -> "Any | None": + """Return the sqlspec_rs module when available.""" + if not SQLSPEC_RS_INSTALLED: + return None + try: + import importlib + + return importlib.import_module("sqlspec_rs") + except ModuleNotFoundError: + return None __all__ = ( "ALLOYDB_CONNECTOR_INSTALLED", @@ -637,6 +650,7 @@ def labels(self, *labelvalues: str, **labelkwargs: str) -> _MetricInstance: "PROMETHEUS_INSTALLED", "PYARROW_INSTALLED", "PYDANTIC_INSTALLED", + "SQLSPEC_RS_INSTALLED", "UNSET", "UNSET_STUB", "UUID_UTILS_INSTALLED", @@ -679,6 +693,7 @@ def labels(self, *labelvalues: str, **labelkwargs: str) -> _MetricInstance: "Tracer", "TypeAdapter", "TypeAdapterStub", + "get_sqlspec_rs", "UnsetType", "UnsetTypeStub", "attrs_asdict", diff --git a/sqlspec/config.py b/sqlspec/config.py index 5c23b9c7..95f25ad3 100644 --- a/sqlspec/config.py +++ b/sqlspec/config.py @@ -9,6 +9,7 @@ from typing_extensions import NotRequired, TypedDict from sqlspec.core import ParameterStyle, ParameterStyleConfig, StatementConfig +from sqlspec._typing import SQLSPEC_RS_INSTALLED, get_sqlspec_rs from sqlspec.exceptions import MissingDependencyError from sqlspec.extensions.events import EventRuntimeHints from sqlspec.loader import SQLFileLoader @@ -880,6 +881,21 @@ def _configure_observability_extensions(self) -> None: if updated is not self.observability_config: self.observability_config = updated + def _configure_fast_path_binder(self) -> None: + """Attach sqlspec_rs fast-path binder when available.""" + + if "fast_path_binder" in self.driver_features: + return + if not SQLSPEC_RS_INSTALLED: + return + module = get_sqlspec_rs() + if module is None: + return + binder = getattr(module, "fast_path_bind", None) + if binder is None: + return + self.driver_features["fast_path_binder"] = binder + def _promote_driver_feature_hooks(self) -> None: lifecycle_hooks: dict[str, list[Callable[[dict[str, Any]], None]]] = {} @@ -1206,6 +1222,7 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} + self._configure_fast_path_binder() self._storage_capabilities = None self.driver_features.setdefault("storage_capabilities", self.storage_capabilities()) self._promote_driver_feature_hooks() @@ -1377,6 +1394,7 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} + self._configure_fast_path_binder() self._promote_driver_feature_hooks() self._configure_observability_extensions() @@ -1547,6 +1565,7 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} + self._configure_fast_path_binder() self._storage_capabilities = None self.driver_features.setdefault("storage_capabilities", self.storage_capabilities()) self._promote_driver_feature_hooks() @@ -1752,6 +1771,7 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} + self._configure_fast_path_binder() self._storage_capabilities = None self.driver_features.setdefault("storage_capabilities", self.storage_capabilities()) self._promote_driver_feature_hooks() diff --git a/sqlspec/typing.py b/sqlspec/typing.py index 0c4ce504..cf2da436 100644 --- a/sqlspec/typing.py +++ b/sqlspec/typing.py @@ -24,6 +24,7 @@ PROMETHEUS_INSTALLED, PYARROW_INSTALLED, PYDANTIC_INSTALLED, + SQLSPEC_RS_INSTALLED, UNSET, UUID_UTILS_INSTALLED, ArrowRecordBatch, @@ -64,6 +65,7 @@ cattrs_structure, cattrs_unstructure, convert, + get_sqlspec_rs, module_available, trace, ) From 1ac6fbd82652b36522a2ad83fee93345000e9f8f Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 17:59:23 +0000 Subject: [PATCH 47/66] fix(driver): add ProcessedState type import --- sqlspec/driver/_common.py | 1 + 1 file changed, 1 insertion(+) diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index e8a8311c..7e0648c8 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -54,6 +54,7 @@ from collections.abc import Callable, Sequence from sqlspec.core import FilterTypeT, StatementFilter + from sqlspec.core.statement import ProcessedState from sqlspec.core.parameters._types import ConvertedParameters from sqlspec.core.stack import StatementStack from sqlspec.data_dictionary._types import DialectConfig From 1374bb78552bd076fdd383ca794f3b7120881eff Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 18:00:47 +0000 Subject: [PATCH 48/66] fix(driver): remove stray class body literal --- sqlspec/driver/_common.py | 1 - 1 file changed, 1 deletion(-) diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index 7e0648c8..86a97bdc 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -1911,4 +1911,3 @@ def _add_count_over_column(self, original_sql: "SQL", alias: str = "_total_count statement_config=original_sql.statement_config, **original_sql.named_parameters, ) - "_QueryCache", From d1ea772e44daea7d54e73b89aeae14d91ba1d3a2 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 18:10:20 +0000 Subject: [PATCH 49/66] chore: correct mypyc build --- .pre-commit-config.yaml | 2 +- sqlspec/driver/_common.py | 479 ++++++++++++++++++++++------- uv.lock | 613 +++++++++++++++++++------------------- 3 files changed, 679 insertions(+), 415 deletions(-) diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml index a5d0c408..871dd815 100644 --- a/.pre-commit-config.yaml +++ b/.pre-commit-config.yaml @@ -17,7 +17,7 @@ repos: - id: mixed-line-ending - id: trailing-whitespace - repo: https://github.com/charliermarsh/ruff-pre-commit - rev: "v0.14.14" + rev: "v0.15.0" hooks: - id: ruff args: ["--fix"] diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index 86a97bdc..fcbe1e74 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -7,7 +7,18 @@ from collections import OrderedDict from contextlib import suppress from time import perf_counter -from typing import TYPE_CHECKING, Any, ClassVar, Final, Literal, NamedTuple, NoReturn, Protocol, cast, overload +from typing import ( + TYPE_CHECKING, + Any, + ClassVar, + Final, + Literal, + NamedTuple, + NoReturn, + Protocol, + cast, + overload, +) from mypy_extensions import mypyc_attr from sqlglot import exp @@ -28,14 +39,27 @@ ) from sqlspec.core._pool import get_sql_pool from sqlspec.core.compiler import OperationProfile, OperationType -from sqlspec.core.parameters import ParameterProcessor, ParameterProfile from sqlspec.core.metrics import StackExecutionMetrics -from sqlspec.core.parameters import structural_fingerprint, value_fingerprint +from sqlspec.core.parameters import ( + ParameterProcessor, + ParameterProfile, + structural_fingerprint, + value_fingerprint, +) from sqlspec.data_dictionary._loader import get_data_dictionary_loader from sqlspec.data_dictionary._registry import get_dialect_config from sqlspec.driver._storage_helpers import CAPABILITY_HINTS -from sqlspec.exceptions import ImproperConfigurationError, NotFoundError, SQLFileNotFoundError, StorageCapabilityError -from sqlspec.observability import ObservabilityRuntime, get_trace_context, resolve_db_system +from sqlspec.exceptions import ( + ImproperConfigurationError, + NotFoundError, + SQLFileNotFoundError, + StorageCapabilityError, +) +from sqlspec.observability import ( + ObservabilityRuntime, + get_trace_context, + resolve_db_system, +) from sqlspec.protocols import HasDataProtocol, HasExecuteProtocol, StatementProtocol from sqlspec.typing import VersionCacheResult, VersionInfo from sqlspec.utils.logging import get_logger, log_with_context @@ -54,16 +78,19 @@ from collections.abc import Callable, Sequence from sqlspec.core import FilterTypeT, StatementFilter - from sqlspec.core.statement import ProcessedState from sqlspec.core.parameters._types import ConvertedParameters from sqlspec.core.stack import StatementStack + from sqlspec.core.statement import ProcessedState from sqlspec.data_dictionary._types import DialectConfig - from sqlspec.storage import AsyncStoragePipeline, StorageCapabilities, SyncStoragePipeline + from sqlspec.storage import ( + AsyncStoragePipeline, + StorageCapabilities, + SyncStoragePipeline, + ) from sqlspec.typing import ForeignKeyMetadata, SchemaT, StatementParameters __all__ = ( - "CachedQuery", "DEFAULT_EXECUTION_RESULT", "EXEC_CURSOR_RESULT", "EXEC_ROWCOUNT_OVERRIDE", @@ -71,6 +98,7 @@ "VERSION_GROUPS_MIN_FOR_MINOR", "VERSION_GROUPS_MIN_FOR_PATCH", "AsyncExceptionHandler", + "CachedQuery", "CommonDriverAttributesMixin", "DataDictionaryDialectMixin", "DataDictionaryMixin", @@ -98,21 +126,26 @@ def _parameter_sort_key(item: "tuple[str, object]") -> float: def _select_dominant_style( - style_counts: "dict[ParameterStyle, int]", precedence: "dict[ParameterStyle, int]" + style_counts: "dict[ParameterStyle, int]", + precedence: "dict[ParameterStyle, int]", ) -> "ParameterStyle": best_style: ParameterStyle | None = None best_count = -1 best_precedence = 100 for style, count in style_counts.items(): current_precedence = precedence.get(style, 99) - if count > best_count or (count == best_count and current_precedence < best_precedence): + if count > best_count or ( + count == best_count and current_precedence < best_precedence + ): best_style = style best_count = count best_precedence = current_precedence return cast("ParameterStyle", best_style) -def _extract_pagination_placeholders_from_expression(expression: "exp.Expression") -> "set[str]": +def _extract_pagination_placeholders_from_expression( + expression: "exp.Expression", +) -> "set[str]": """Extract named placeholder names from LIMIT and OFFSET clauses of an expression. Args: @@ -120,6 +153,7 @@ def _extract_pagination_placeholders_from_expression(expression: "exp.Expression Returns: Set of placeholder names found in LIMIT/OFFSET clauses. + """ pagination_placeholders: set[str] = set() @@ -155,6 +189,7 @@ def _extract_pagination_placeholders(original_sql: "SQL") -> "set[str]": Returns: Set of placeholder names found in LIMIT/OFFSET clauses. + """ import sqlglot @@ -165,7 +200,10 @@ def _extract_pagination_placeholders(original_sql: "SQL") -> "set[str]": if placeholders: return placeholders # Check if it has any named placeholders at all - if not, fall through - has_named = any(isinstance(n, exp.Placeholder) and n.this is not None for n in stmt_expr.walk()) + has_named = any( + isinstance(n, exp.Placeholder) and n.this is not None + for n in stmt_expr.walk() + ) if has_named: # Expression has named placeholders but none in LIMIT/OFFSET return set() @@ -245,6 +283,7 @@ def make_cache_key_hashable(obj: Any) -> Any: Returns: A hashable representation of the object. Collections become tuples, arrays become structural tuples like ("ndarray", dtype, shape). + """ if isinstance(obj, (int, str, bytes, bool, float, type(None))): return obj @@ -271,7 +310,11 @@ def make_cache_key_hashable(obj: Any) -> Any: continue if has_array_interface(current_obj): try: - dtype_str = current_obj.dtype.str if has_dtype_str(current_obj.dtype) else str(type(current_obj)) + dtype_str = ( + current_obj.dtype.str + if has_dtype_str(current_obj.dtype) + else str(type(current_obj)) + ) shape = tuple(int(s) for s in current_obj.shape) parent[idx] = ("ndarray", dtype_str, shape) except (AttributeError, TypeError): @@ -288,7 +331,10 @@ def make_cache_key_hashable(obj: Any) -> Any: stack.append((_CONVERT_TO_TUPLE, parent, idx)) - stack.extend((current_obj[i], new_list, i) for i in range(len(current_obj) - 1, -1, -1)) + stack.extend( + (current_obj[i], new_list, i) + for i in range(len(current_obj) - 1, -1, -1) + ) continue if isinstance(current_obj, dict): @@ -306,7 +352,10 @@ def make_cache_key_hashable(obj: Any) -> Any: stack.append((_CONVERT_TO_TUPLE, parent, idx)) for i in range(len(items_list) - 1, -1, -1): - stack.extend(((_CONVERT_TO_TUPLE, items_list, i), (items_list[i][1], items_list[i], 1))) + stack.extend(( + (_CONVERT_TO_TUPLE, items_list, i), + (items_list[i][1], items_list[i], 1), + )) continue @@ -321,7 +370,10 @@ def make_cache_key_hashable(obj: Any) -> Any: stack.append((_CONVERT_TO_FROZENSET, parent, idx)) - stack.extend((sorted_list[i], new_list, i) for i in range(len(sorted_list) - 1, -1, -1)) + stack.extend( + (sorted_list[i], new_list, i) + for i in range(len(sorted_list) - 1, -1, -1) + ) continue parent[idx] = current_obj @@ -337,6 +389,7 @@ def _callable_cache_key(func: Any) -> Any: Returns: Tuple identifying the callable, or None for missing callables. + """ if func is None: return None @@ -404,7 +457,9 @@ def __enter__(self) -> Self: "sqlspec.stack.native_pipeline": self.native_pipeline, "sqlspec.stack.forced_disable": self.driver.stack_native_disabled, } - self.span = self.runtime.start_span("sqlspec.stack.execute", attributes=attributes) + self.span = self.runtime.start_span( + "sqlspec.stack.execute", attributes=attributes + ) log_with_context( logger, logging.DEBUG, @@ -421,12 +476,16 @@ def __enter__(self) -> Self: ) return self - def __exit__(self, exc_type: Any, exc: Exception | None, exc_tb: Any) -> Literal[False]: + def __exit__( + self, exc_type: Any, exc: Exception | None, exc_tb: Any + ) -> Literal[False]: duration = perf_counter() - self.started self.metrics.record_duration(duration) if exc is not None: self.metrics.record_error(exc) - self.runtime.span_manager.end_span(self.span, error=exc if exc is not None else None) + self.runtime.span_manager.end_span( + self.span, error=exc if exc is not None else None + ) self.metrics.emit(self.runtime) level = logging.ERROR if exc is not None else logging.DEBUG trace_id, span_id = get_trace_context() @@ -521,7 +580,9 @@ def resolve_feature_flag(self, feature: str, version: "VersionInfo | None") -> b def list_available_features(self) -> "list[str]": """List available feature flags for this dialect.""" config = self.get_dialect_config() - features = set(config.feature_flags.keys()) | set(config.feature_versions.keys()) + features = set(config.feature_flags.keys()) | set( + config.feature_versions.keys() + ) return sorted(features) @@ -581,7 +642,9 @@ def get_cached_version_for_driver(self, driver: Any) -> "VersionCacheResult": """ return self.get_cached_version(id(driver)) - def cache_version_for_driver(self, driver: Any, version: "VersionInfo | None") -> None: + def cache_version_for_driver( + self, driver: Any, version: "VersionInfo | None" + ) -> None: """Cache version info for a driver instance. Args: @@ -609,13 +672,19 @@ def parse_version_string(self, version_str: str) -> "VersionInfo | None": groups = match.groups() major = int(groups[0]) - minor = int(groups[1]) if len(groups) > VERSION_GROUPS_MIN_FOR_MINOR else 0 - patch = int(groups[2]) if len(groups) > VERSION_GROUPS_MIN_FOR_PATCH else 0 + minor = ( + int(groups[1]) if len(groups) > VERSION_GROUPS_MIN_FOR_MINOR else 0 + ) + patch = ( + int(groups[2]) if len(groups) > VERSION_GROUPS_MIN_FOR_PATCH else 0 + ) return VersionInfo(major, minor, patch) return None - def parse_version_with_pattern(self, pattern: "re.Pattern[str]", version_str: str) -> "VersionInfo | None": + def parse_version_with_pattern( + self, pattern: "re.Pattern[str]", version_str: str + ) -> "VersionInfo | None": """Parse version string using a specific regex pattern. Args: @@ -635,8 +704,16 @@ def parse_version_with_pattern(self, pattern: "re.Pattern[str]", version_str: st return None major = int(groups[0]) - minor = int(groups[1]) if len(groups) > VERSION_GROUPS_MIN_FOR_MINOR and groups[1] else 0 - patch = int(groups[2]) if len(groups) > VERSION_GROUPS_MIN_FOR_PATCH and groups[2] else 0 + minor = ( + int(groups[1]) + if len(groups) > VERSION_GROUPS_MIN_FOR_MINOR and groups[1] + else 0 + ) + patch = ( + int(groups[2]) + if len(groups) > VERSION_GROUPS_MIN_FOR_PATCH and groups[2] + else 0 + ) return VersionInfo(major, minor, patch) def _resolve_log_adapter(self) -> str: @@ -647,18 +724,25 @@ def _resolve_log_adapter(self) -> str: def _log_version_detected(self, adapter: str, version: VersionInfo) -> None: """Log detected database version with db.system context.""" - logger.debug( - "Detected database version", extra={"db.system": resolve_db_system(adapter), "db.version": str(version)} + "Detected database version", + extra={"db.system": resolve_db_system(adapter), "db.version": str(version)}, ) def _log_version_unavailable(self, adapter: str, reason: str) -> None: """Log that database version could not be determined.""" - - logger.debug("Database version unavailable", extra={"db.system": resolve_db_system(adapter), "reason": reason}) + logger.debug( + "Database version unavailable", + extra={"db.system": resolve_db_system(adapter), "reason": reason}, + ) def _log_schema_introspect( - self, driver: Any, *, schema_name: "str | None", table_name: "str | None", operation: str + self, + driver: Any, + *, + schema_name: "str | None", + table_name: "str | None", + operation: str, ) -> None: """Log schema-level introspection activity.""" log_with_context( @@ -671,7 +755,9 @@ def _log_schema_introspect( operation=operation, ) - def _log_table_describe(self, driver: Any, *, schema_name: "str | None", table_name: str, operation: str) -> None: + def _log_table_describe( + self, driver: Any, *, schema_name: "str | None", table_name: str, operation: str + ) -> None: """Log table-level introspection activity.""" log_with_context( logger, @@ -683,7 +769,9 @@ def _log_table_describe(self, driver: Any, *, schema_name: "str | None", table_n operation=operation, ) - def detect_version_with_queries(self, driver: "HasExecuteProtocol", queries: "list[str]") -> "VersionInfo | None": + def detect_version_with_queries( + self, driver: "HasExecuteProtocol", queries: "list[str]" + ) -> "VersionInfo | None": """Try multiple version queries to detect database version. Args: @@ -708,7 +796,9 @@ def detect_version_with_queries(self, driver: "HasExecuteProtocol", queries: "li parsed_version = self.parse_version_string(version_str) if parsed_version: - self._log_version_detected(self._resolve_log_adapter(), parsed_version) + self._log_version_detected( + self._resolve_log_adapter(), parsed_version + ) return parsed_version self._log_version_unavailable(self._resolve_log_adapter(), "queries_exhausted") @@ -739,7 +829,9 @@ def get_default_features(self) -> "list[str]": """ return ["supports_transactions", "supports_prepared_statements"] - def sort_tables_topologically(self, tables: "list[str]", foreign_keys: "list[ForeignKeyMetadata]") -> "list[str]": + def sort_tables_topologically( + self, tables: "list[str]", foreign_keys: "list[ForeignKeyMetadata]" + ) -> "list[str]": """Sort tables topologically based on foreign key dependencies using Python. Args: @@ -795,7 +887,11 @@ class ExecutionResult(NamedTuple): EXEC_CURSOR_RESULT: Final[int] = 0 EXEC_ROWCOUNT_OVERRIDE: Final[int] = 1 EXEC_SPECIAL_DATA: Final[int] = 2 -DEFAULT_EXECUTION_RESULT: Final["tuple[object | None, int | None, object | None]"] = (None, None, None) +DEFAULT_EXECUTION_RESULT: Final["tuple[object | None, int | None, object | None]"] = ( + None, + None, + None, +) _DEFAULT_METADATA: Final = {"status_message": "OK"} @@ -817,7 +913,7 @@ class _QueryCache: __slots__ = ("_cache", "_max_size") def __init__(self, max_size: int) -> None: - self._cache: "OrderedDict[str, CachedQuery]" = OrderedDict() + self._cache: OrderedDict[str, CachedQuery] = OrderedDict() self._max_size = max_size def get(self, sql: str) -> CachedQuery | None: @@ -830,9 +926,8 @@ def get(self, sql: str) -> CachedQuery | None: def set(self, sql: str, entry: CachedQuery) -> None: if sql in self._cache: self._cache.move_to_end(sql) - else: - if len(self._cache) >= self._max_size: - self._cache.popitem(last=False) + elif len(self._cache) >= self._max_size: + self._cache.popitem(last=False) self._cache[sql] = entry @@ -878,7 +973,11 @@ def __init__( self._query_cache = _QueryCache(_FAST_PATH_QUERY_CACHE_SIZE) self._fast_path_enabled = False self._fast_path_binder: ( - "Callable[[Any, ParameterProfile, Any, tuple[str, ...], bool, bool], ConvertedParameters] | None" + Callable[ + [Any, ParameterProfile, Any, tuple[str, ...], bool, bool], + ConvertedParameters, + ] + | None ) = None binder = self.driver_features.get("fast_path_binder") if binder is not None and callable(binder): @@ -892,7 +991,8 @@ def attach_observability(self, runtime: "ObservabilityRuntime") -> None: def _update_fast_path_flag(self) -> None: self._fast_path_enabled = bool( - not self.statement_config.statement_transformers and self.observability.is_idle + not self.statement_config.statement_transformers + and self.observability.is_idle, ) @property @@ -951,7 +1051,9 @@ def _require_capability(self, capability_flag: str) -> None: human_label = CAPABILITY_HINTS.get(capability_flag, capability_flag) remediation = "Check adapter supports this capability or stage artifacts via storage pipeline." msg = f"{human_label} is not available for this adapter" - raise StorageCapabilityError(msg, capability=capability_flag, remediation=remediation) + raise StorageCapabilityError( + msg, capability=capability_flag, remediation=remediation + ) def _raise_storage_not_implemented(self, capability: str) -> None: """Raise NotImplementedError for storage operations. @@ -964,14 +1066,20 @@ def _raise_storage_not_implemented(self, capability: str) -> None: """ msg = f"{capability} is not implemented for this driver" - remediation = "Override storage methods on the adapter to enable this capability." - raise StorageCapabilityError(msg, capability=capability, remediation=remediation) + remediation = ( + "Override storage methods on the adapter to enable this capability." + ) + raise StorageCapabilityError( + msg, capability=capability, remediation=remediation + ) def _release_pooled_statement(self, statement: "SQL") -> None: if getattr(statement, "_pooled", False): get_sql_pool().release(statement) - def _fast_rebind(self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQuery") -> "ConvertedParameters": + def _fast_rebind( + self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQuery" + ) -> "ConvertedParameters": binder = self._fast_path_binder if binder is not None: return binder( @@ -983,7 +1091,11 @@ def _fast_rebind(self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQue cached.applied_wrap_types, ) config = self.statement_config.parameter_config - if not cached.input_named_parameters and not cached.applied_wrap_types and not config.type_coercion_map: + if ( + not cached.input_named_parameters + and not cached.applied_wrap_types + and not config.type_coercion_map + ): return params processor = ParameterProcessor( converter=self.statement_config.parameter_converter, @@ -1039,7 +1151,9 @@ def _build_fast_statement( ) return statement - def _try_fast_execute(self, statement: str, params: "tuple[Any, ...] | list[Any]") -> "SQLResult | None": + def _try_fast_execute( + self, statement: str, params: "tuple[Any, ...] | list[Any]" + ) -> "SQLResult | None": if not self._fast_path_enabled: return None if self.statement_config.parameter_config.needs_static_script_compilation: @@ -1049,16 +1163,25 @@ def _try_fast_execute(self, statement: str, params: "tuple[Any, ...] | list[Any] return None if cached.param_count != len(params): return None - if isinstance(params, list) and params and isinstance(params[0], (tuple, list, dict)) and len(params) > 1: + if ( + isinstance(params, list) + and params + and isinstance(params[0], (tuple, list, dict)) + and len(params) > 1 + ): return None rebound_params = self._fast_rebind(params, cached) compiled_sql = cached.compiled_sql output_transformer = self.statement_config.output_transformer if output_transformer: - compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) + compiled_sql, rebound_params = output_transformer( + compiled_sql, rebound_params + ) - fast_statement = self._build_fast_statement(statement, params, cached, rebound_params) + fast_statement = self._build_fast_statement( + statement, params, cached, rebound_params + ) return self._execute_raw(fast_statement, compiled_sql, rebound_params) def _execute_raw(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": @@ -1098,16 +1221,24 @@ def _maybe_cache_fast_path(self, statement: "SQL") -> None: @overload @staticmethod - def to_schema(data: "list[dict[str, Any]]", *, schema_type: "type[SchemaT]") -> "list[SchemaT]": ... + def to_schema( + data: "list[dict[str, Any]]", *, schema_type: "type[SchemaT]" + ) -> "list[SchemaT]": ... @overload @staticmethod - def to_schema(data: "list[dict[str, Any]]", *, schema_type: None = None) -> "list[dict[str, Any]]": ... + def to_schema( + data: "list[dict[str, Any]]", *, schema_type: None = None + ) -> "list[dict[str, Any]]": ... @overload @staticmethod - def to_schema(data: "dict[str, Any]", *, schema_type: "type[SchemaT]") -> "SchemaT": ... + def to_schema( + data: "dict[str, Any]", *, schema_type: "type[SchemaT]" + ) -> "SchemaT": ... @overload @staticmethod - def to_schema(data: "dict[str, Any]", *, schema_type: None = None) -> "dict[str, Any]": ... + def to_schema( + data: "dict[str, Any]", *, schema_type: None = None + ) -> "dict[str, Any]": ... @overload @staticmethod def to_schema(data: Any, *, schema_type: "type[SchemaT]") -> Any: ... @@ -1189,7 +1320,9 @@ def create_execution_result( last_inserted_id, ) - def build_statement_result(self, statement: "SQL", execution_result: ExecutionResult) -> "SQLResult": + def build_statement_result( + self, statement: "SQL", execution_result: ExecutionResult + ) -> "SQLResult": """Build and return the SQLResult from ExecutionResult data. Args: @@ -1300,11 +1433,17 @@ def prepare_statement( filters, data_parameters = self._split_parameters(parameters) if isinstance(statement, QueryBuilder): - sql_statement = self._prepare_from_builder(statement, data_parameters, statement_config, kwargs) + sql_statement = self._prepare_from_builder( + statement, data_parameters, statement_config, kwargs + ) elif isinstance(statement, SQL): - sql_statement = self._prepare_from_sql(statement, data_parameters, statement_config, kwargs) + sql_statement = self._prepare_from_sql( + statement, data_parameters, statement_config, kwargs + ) else: - sql_statement = self._prepare_from_string(statement, data_parameters, statement_config, kwargs) + sql_statement = self._prepare_from_string( + statement, data_parameters, statement_config, kwargs + ) # Cache the newly created SQL object for future use if not filters and not kwargs and isinstance(statement, str): self._statement_cache[statement] = sql_statement @@ -1312,7 +1451,8 @@ def prepare_statement( return self._apply_filters(sql_statement, filters) def _split_parameters( - self, parameters: "tuple[StatementParameters | StatementFilter, ...]" + self, + parameters: "tuple[StatementParameters | StatementFilter, ...]", ) -> "tuple[list[StatementFilter], list[StatementParameters]]": filters: list[StatementFilter] = [] data_parameters: list[StatementParameters] = [] @@ -1338,7 +1478,12 @@ def _prepare_from_builder( else sql_statement.positional_parameters ) statement_seed = sql_statement.raw_expression or sql_statement.raw_sql - return SQL(statement_seed, *merged_parameters, statement_config=statement_config, **kwargs) + return SQL( + statement_seed, + *merged_parameters, + statement_config=statement_config, + **kwargs, + ) return sql_statement def _prepare_from_sql( @@ -1355,7 +1500,12 @@ def _prepare_from_sql( else sql_statement.positional_parameters ) statement_seed = sql_statement.raw_expression or sql_statement.raw_sql - return SQL(statement_seed, *merged_parameters, statement_config=statement_config, **kwargs) + return SQL( + statement_seed, + *merged_parameters, + statement_config=statement_config, + **kwargs, + ) needs_rebuild = False if statement_config.dialect and ( @@ -1371,12 +1521,29 @@ def _prepare_from_sql( needs_rebuild = True if needs_rebuild: - statement_seed = sql_statement.raw_expression or sql_statement.raw_sql or sql_statement.sql + statement_seed = ( + sql_statement.raw_expression + or sql_statement.raw_sql + or sql_statement.sql + ) if sql_statement.is_many and sql_statement.parameters: - return SQL(statement_seed, sql_statement.parameters, statement_config=statement_config, is_many=True) + return SQL( + statement_seed, + sql_statement.parameters, + statement_config=statement_config, + is_many=True, + ) if sql_statement.named_parameters: - return SQL(statement_seed, statement_config=statement_config, **sql_statement.named_parameters) - return SQL(statement_seed, *sql_statement.positional_parameters, statement_config=statement_config) + return SQL( + statement_seed, + statement_config=statement_config, + **sql_statement.named_parameters, + ) + return SQL( + statement_seed, + *sql_statement.positional_parameters, + statement_config=statement_config, + ) return sql_statement def _prepare_from_string( @@ -1386,15 +1553,25 @@ def _prepare_from_string( statement_config: "StatementConfig", kwargs: "dict[str, Any]", ) -> "SQL": - return SQL(statement, *tuple(data_parameters), statement_config=statement_config, **kwargs) + return SQL( + statement, + *tuple(data_parameters), + statement_config=statement_config, + **kwargs, + ) - def _apply_filters(self, sql_statement: "SQL", filters: "list[StatementFilter]") -> "SQL": + def _apply_filters( + self, sql_statement: "SQL", filters: "list[StatementFilter]" + ) -> "SQL": for filter_obj in filters: sql_statement = filter_obj.append_to_statement(sql_statement) return sql_statement def split_script_statements( - self, script: str, statement_config: "StatementConfig", strip_trailing_semicolon: bool = False + self, + script: str, + statement_config: "StatementConfig", + strip_trailing_semicolon: bool = False, ) -> "list[str]": """Split a SQL script into individual statements. @@ -1413,7 +1590,9 @@ def split_script_statements( return [ sql_script.strip() for sql_script in split_sql_script( - script, dialect=str(statement_config.dialect), strip_trailing_terminator=strip_trailing_semicolon + script, + dialect=str(statement_config.dialect), + strip_trailing_terminator=strip_trailing_semicolon, ) if sql_script.strip() ] @@ -1440,7 +1619,10 @@ def prepare_driver_parameters( Parameters with TypedParameter objects unwrapped to primitive values """ - if parameters is None and statement_config.parameter_config.needs_static_script_compilation: + if ( + parameters is None + and statement_config.parameter_config.needs_static_script_compilation + ): return None if not parameters: @@ -1448,11 +1630,18 @@ def prepare_driver_parameters( if is_many: if isinstance(parameters, list): - return [self._format_parameter_set_for_many(param_set, statement_config) for param_set in parameters] + return [ + self._format_parameter_set_for_many(param_set, statement_config) + for param_set in parameters + ] return [self._format_parameter_set_for_many(parameters, statement_config)] return self._format_parameter_set(parameters, statement_config) - def _apply_coercion(self, value: object, type_coercion_map: "dict[type, Callable[[Any], Any]] | None") -> object: + def _apply_coercion( + self, + value: object, + type_coercion_map: "dict[type, Callable[[Any], Any]] | None", + ) -> object: """Apply type coercion to a single value. Args: @@ -1471,7 +1660,9 @@ def _apply_coercion(self, value: object, type_coercion_map: "dict[type, Callable return unwrapped_value def _format_parameter_set_for_many( - self, parameters: "StatementParameters", statement_config: "StatementConfig" + self, + parameters: "StatementParameters", + statement_config: "StatementConfig", ) -> "ConvertedParameters": """Prepare a single parameter set for execute_many operations. @@ -1496,13 +1687,19 @@ def _format_parameter_set_for_many( return [coerce_value(parameters, type_coercion_map)] if isinstance(parameters, dict): - return {k: coerce_value(v, type_coercion_map) for k, v in parameters.items()} + return { + k: coerce_value(v, type_coercion_map) for k, v in parameters.items() + } coerced_params = [coerce_value(p, type_coercion_map) for p in parameters] - return tuple(coerced_params) if isinstance(parameters, tuple) else coerced_params + return ( + tuple(coerced_params) if isinstance(parameters, tuple) else coerced_params + ) def _format_parameter_set( - self, parameters: "StatementParameters", statement_config: "StatementConfig" + self, + parameters: "StatementParameters", + statement_config: "StatementConfig", ) -> "ConvertedParameters": """Prepare a single parameter set for database driver consumption. @@ -1524,28 +1721,44 @@ def _format_parameter_set( return [coerce_value(parameters, type_coercion_map)] if isinstance(parameters, dict): - if statement_config.parameter_config.supported_execution_parameter_styles and ( - ParameterStyle.NAMED_PYFORMAT in statement_config.parameter_config.supported_execution_parameter_styles - or ParameterStyle.NAMED_COLON in statement_config.parameter_config.supported_execution_parameter_styles + if ( + statement_config.parameter_config.supported_execution_parameter_styles + and ( + ParameterStyle.NAMED_PYFORMAT + in statement_config.parameter_config.supported_execution_parameter_styles + or ParameterStyle.NAMED_COLON + in statement_config.parameter_config.supported_execution_parameter_styles + ) ): - return {k: coerce_value(v, type_coercion_map) for k, v in parameters.items()} + return { + k: coerce_value(v, type_coercion_map) for k, v in parameters.items() + } if statement_config.parameter_config.default_parameter_style in { ParameterStyle.NUMERIC, ParameterStyle.QMARK, ParameterStyle.POSITIONAL_PYFORMAT, }: sorted_items = sorted(parameters.items(), key=_parameter_sort_key) - return [coerce_value(value, type_coercion_map) for _, value in sorted_items] + return [ + coerce_value(value, type_coercion_map) for _, value in sorted_items + ] - return {k: coerce_value(v, type_coercion_map) for k, v in parameters.items()} + return { + k: coerce_value(v, type_coercion_map) for k, v in parameters.items() + } coerced_params = [coerce_value(p, type_coercion_map) for p in parameters] - if statement_config.parameter_config.preserve_parameter_format and isinstance(parameters, tuple): + if statement_config.parameter_config.preserve_parameter_format and isinstance( + parameters, tuple + ): return tuple(coerced_params) return coerced_params def _get_compiled_sql( - self, statement: "SQL", statement_config: "StatementConfig", flatten_single_parameters: bool = False + self, + statement: "SQL", + statement_config: "StatementConfig", + flatten_single_parameters: bool = False, ) -> "tuple[str, object]": """Get compiled SQL with parameter style conversion and caching. @@ -1562,12 +1775,17 @@ def _get_compiled_sql( """ compiled_statement, prepared_parameters = self._get_compiled_statement( - statement, statement_config, flatten_single_parameters=flatten_single_parameters + statement, + statement_config, + flatten_single_parameters=flatten_single_parameters, ) return compiled_statement.compiled_sql, prepared_parameters def _get_compiled_statement( - self, statement: "SQL", statement_config: "StatementConfig", flatten_single_parameters: bool = False + self, + statement: "SQL", + statement_config: "StatementConfig", + flatten_single_parameters: bool = False, ) -> "tuple[CachedStatement, object]": """Compile SQL and return cached statement metadata plus prepared parameters. @@ -1581,10 +1799,15 @@ def _get_compiled_statement( if getattr(statement, "_compiled_from_cache", False): compiled_sql, execution_parameters = statement.compile() prepared_parameters = self.prepare_driver_parameters( - execution_parameters, statement_config, is_many=statement.is_many, prepared_statement=statement + execution_parameters, + statement_config, + is_many=statement.is_many, + prepared_statement=statement, ) cached_statement = CachedStatement( - compiled_sql=compiled_sql, parameters=prepared_parameters, expression=statement.expression + compiled_sql=compiled_sql, + parameters=prepared_parameters, + expression=statement.expression, ) self._maybe_cache_fast_path(statement) return cached_statement, prepared_parameters @@ -1622,7 +1845,9 @@ def _get_compiled_statement( cache_key = None cache = None if cache_config.compiled_cache_enabled and statement_config.enable_caching: - cache_key = self._generate_compilation_cache_key(statement, statement_config, flatten_single_parameters) + cache_key = self._generate_compilation_cache_key( + statement, statement_config, flatten_single_parameters + ) cache = get_cache() cached_result = cache.get_statement(cache_key, dialect_key) if cached_result is not None and isinstance(cached_result, CachedStatement): @@ -1631,7 +1856,10 @@ def _get_compiled_statement( # Compile with the statement's parameters to get correctly processed values. compiled_sql, execution_parameters = statement.compile() prepared_parameters = self.prepare_driver_parameters( - execution_parameters, statement_config, is_many=statement.is_many, prepared_statement=statement + execution_parameters, + statement_config, + is_many=statement.is_many, + prepared_statement=statement, ) # Return cached SQL metadata but with newly processed parameters # Preserve list type for execute_many operations (some drivers require list, not tuple) @@ -1647,12 +1875,21 @@ def _get_compiled_statement( compiled_sql, execution_parameters = statement.compile() prepared_parameters = self.prepare_driver_parameters( - execution_parameters, statement_config, is_many=statement.is_many, prepared_statement=statement + execution_parameters, + statement_config, + is_many=statement.is_many, + prepared_statement=statement, ) - cached_parameters = tuple(prepared_parameters) if isinstance(prepared_parameters, list) else prepared_parameters + cached_parameters = ( + tuple(prepared_parameters) + if isinstance(prepared_parameters, list) + else prepared_parameters + ) cached_statement = CachedStatement( - compiled_sql=compiled_sql, parameters=cached_parameters, expression=statement.expression + compiled_sql=compiled_sql, + parameters=cached_parameters, + expression=statement.expression, ) if cache_key is not None and cache is not None: @@ -1662,7 +1899,10 @@ def _get_compiled_statement( return cached_statement, prepared_parameters def _generate_compilation_cache_key( - self, statement: "SQL", config: "StatementConfig", flatten_single_parameters: bool + self, + statement: "SQL", + config: "StatementConfig", + flatten_single_parameters: bool, ) -> str: """Generate cache key that includes all compilation context. @@ -1670,7 +1910,10 @@ def _generate_compilation_cache_key( preventing cache contamination between different compilation contexts. """ statement_transformers = ( - tuple(_callable_cache_key(transformer) for transformer in config.statement_transformers) + tuple( + _callable_cache_key(transformer) + for transformer in config.statement_transformers + ) if config.statement_transformers else () ) @@ -1692,11 +1935,11 @@ def _generate_compilation_cache_key( if params is None or (isinstance(params, (list, tuple, dict)) and not params): return f"compiled:{hash(statement.sql)}:{context_hash}" - if isinstance(params, tuple) and all(isinstance(p, (int, str, bytes, bool, type(None))) for p in params): + if isinstance(params, tuple) and all( + isinstance(p, (int, str, bytes, bool, type(None))) for p in params + ): try: - return ( - f"compiled:{hash((statement.sql, params, statement.is_many, statement.is_script))}:{context_hash}" - ) + return f"compiled:{hash((statement.sql, params, statement.is_many, statement.is_script))}:{context_hash}" except TypeError: pass @@ -1707,10 +1950,17 @@ def _generate_compilation_cache_key( params_fingerprint = value_fingerprint(params) else: params_fingerprint = structural_fingerprint(params) - base_hash = hash((statement.sql, params_fingerprint, statement.is_many, statement.is_script)) + base_hash = hash(( + statement.sql, + params_fingerprint, + statement.is_many, + statement.is_script, + )) return f"compiled:{base_hash}:{context_hash}" - def _get_dominant_parameter_style(self, parameters: "list[Any]") -> "ParameterStyle | None": + def _get_dominant_parameter_style( + self, parameters: "list[Any]" + ) -> "ParameterStyle | None": """Determine the dominant parameter style from parameter info list. Args: @@ -1837,15 +2087,23 @@ def _create_count_query(self, original_sql: "SQL") -> "SQL": count_expr.set("joins", [join.copy() for join in joins]) if expr.args.get("where"): - count_expr = count_expr.where(cast("exp.Expression", expr.args.get("where")).copy(), copy=False) + count_expr = count_expr.where( + cast("exp.Expression", expr.args.get("where")).copy(), + copy=False, + ) if expr.args.get("having"): - count_expr = count_expr.having(cast("exp.Expression", expr.args.get("having")).copy(), copy=False) + count_expr = count_expr.having( + cast("exp.Expression", expr.args.get("having")).copy(), + copy=False, + ) if cte is not None: count_expr.set("with_", cte.copy()) # Filter out pagination parameters (limit/offset) captured before compile() filtered_named_params = { - k: v for k, v in original_sql.named_parameters.items() if k not in pagination_params + k: v + for k, v in original_sql.named_parameters.items() + if k not in pagination_params } return SQL( count_expr, @@ -1859,7 +2117,11 @@ def _create_count_query(self, original_sql: "SQL") -> "SQL": if cte is not None: count_expr.set("with_", cte.copy()) # Filter out pagination parameters (limit/offset) captured before compile() - filtered_named_params = {k: v for k, v in original_sql.named_parameters.items() if k not in pagination_params} + filtered_named_params = { + k: v + for k, v in original_sql.named_parameters.items() + if k not in pagination_params + } return SQL( count_expr, *original_sql.positional_parameters, @@ -1867,7 +2129,9 @@ def _create_count_query(self, original_sql: "SQL") -> "SQL": **filtered_named_params, ) - def _add_count_over_column(self, original_sql: "SQL", alias: str = "_total_count") -> "SQL": + def _add_count_over_column( + self, original_sql: "SQL", alias: str = "_total_count" + ) -> "SQL": """Add a COUNT(*) OVER() column to the SELECT statement for inline total counts. This method modifies the SELECT to include a window function that returns @@ -1887,6 +2151,7 @@ def _add_count_over_column(self, original_sql: "SQL", alias: str = "_total_count Example: Original: SELECT id, name FROM users WHERE status = :status LIMIT 10 Result: SELECT id, name, COUNT(*) OVER() AS _total_count FROM users WHERE status = :status LIMIT 10 + """ if not original_sql.expression: original_sql.compile() diff --git a/uv.lock b/uv.lock index 43bc5b82..505857ff 100644 --- a/uv.lock +++ b/uv.lock @@ -657,11 +657,11 @@ wheels = [ [[package]] name = "babel" -version = "2.17.0" +version = "2.18.0" source = { registry = "https://pypi.org/simple" } -sdist = { url = "https://files.pythonhosted.org/packages/7d/6b/d52e42361e1aa00709585ecc30b3f9684b3ab62530771402248b1b1d6240/babel-2.17.0.tar.gz", hash = "sha256:0c54cffb19f690cdcc52a3b50bcbf71e07a808d1c80d549f2459b9d2cf0afb9d", size = 9951852, upload-time = "2025-02-01T15:17:41.026Z" } +sdist = { url = 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-- benchmark_repro.py | 327 --------------- sqlspec/_typing.py | 3 +- sqlspec/adapters/aiosqlite/driver.py | 10 +- sqlspec/config.py | 2 +- sqlspec/core/_correlation.py | 2 +- sqlspec/core/_pool.py | 2 +- sqlspec/driver/_async.py | 2 +- sqlspec/driver/_common.py | 464 +++++----------------- sqlspec/migrations/commands.py | 5 +- sqlspec/typing.py | 2 - sqlspec/utils/fixtures.py | 4 +- tests/unit/adapters/test_sync_adapters.py | 2 +- tests/unit/driver/test_fast_path.py | 32 +- 15 files changed, 141 insertions(+), 826 deletions(-) delete mode 100644 benchmark_dispatch.py delete mode 100644 benchmark_pipeline.py delete mode 100644 benchmark_repro.py diff --git a/benchmark_dispatch.py b/benchmark_dispatch.py deleted file mode 100644 index fa1c1d77..00000000 --- a/benchmark_dispatch.py +++ /dev/null @@ -1,75 +0,0 @@ -import contextlib -import timeit - -from sqlspec.utils.dispatch import TypeDispatcher - -__all__ = ("MyFilter", "StatementFilter", "bench_dispatcher", "bench_getattr", "bench_isinstance", "bench_try_except", ) - - -class StatementFilter: - _is_statement_filter = True - - -class MyFilter(StatementFilter): - pass - - -def bench_isinstance() -> None: - f = MyFilter() - i = 1 - - timeit.default_timer() - for _ in range(1_000_000): - isinstance(f, StatementFilter) - isinstance(i, StatementFilter) - timeit.default_timer() - - -def bench_dispatcher() -> None: - dispatcher = TypeDispatcher[bool]() - dispatcher.register(StatementFilter, True) - - f = MyFilter() - i = 1 - - # Warmup - dispatcher.get(f) - dispatcher.get(i) - - timeit.default_timer() - for _ in range(1_000_000): - dispatcher.get(f) - dispatcher.get(i) - timeit.default_timer() - - -def bench_getattr() -> None: - f = MyFilter() - i = 1 - - timeit.default_timer() - for _ in range(1_000_000): - getattr(f, "_is_statement_filter", False) - getattr(i, "_is_statement_filter", False) - timeit.default_timer() - - -def bench_try_except() -> None: - f = MyFilter() - i = 1 - - timeit.default_timer() - for _ in range(1_000_000): - with contextlib.suppress(AttributeError): - _ = f._is_statement_filter - - with contextlib.suppress(AttributeError): - _ = i._is_statement_filter - timeit.default_timer() - - -if __name__ == "__main__": - bench_isinstance() - bench_dispatcher() - bench_getattr() - bench_try_except() diff --git a/benchmark_pipeline.py b/benchmark_pipeline.py deleted file mode 100644 index 2edfeb57..00000000 --- a/benchmark_pipeline.py +++ /dev/null @@ -1,35 +0,0 @@ -import os -import time - -from sqlspec.core.pipeline import get_statement_pipeline_metrics, reset_statement_pipeline_cache -from sqlspec.core.statement import SQL, get_default_config - -__all__ = ("run_benchmark",) - - -# Enable metrics -os.environ["SQLSPEC_DEBUG_PIPELINE_CACHE"] = "1" - - -def run_benchmark() -> None: - reset_statement_pipeline_cache() - config = get_default_config() - - sql = "INSERT INTO table VALUES (?)" - - time.perf_counter() - for i in range(10_000): - # Create new SQL object every time (simulating driver.execute) - stmt = SQL(sql, (i,), statement_config=config) - stmt.compile() - time.perf_counter() - - metrics = get_statement_pipeline_metrics() - if metrics: - metrics[0] - else: - pass - - -if __name__ == "__main__": - run_benchmark() diff --git a/benchmark_repro.py b/benchmark_repro.py deleted file mode 100644 index d95376f4..00000000 --- a/benchmark_repro.py +++ /dev/null @@ -1,327 +0,0 @@ -import cProfile -import pstats -import sqlite3 -import tempfile -import time -import tracemalloc -from pathlib import Path -from typing import TYPE_CHECKING - -from sqlspec import SQLSpec -from sqlspec.adapters.sqlite import SqliteConfig -from sqlspec.observability import LoggingConfig, ObservabilityConfig, TelemetryConfig - -if TYPE_CHECKING: - from collections.abc import Callable - -ROWS = 10000 -RUNS = 10 - - -# ------------------------- -# Raw sqlite3 benchmark -# ------------------------- -def bench_raw_sqlite(db_path: Path) -> None: - conn = sqlite3.connect(db_path) - cur = conn.cursor() - cur.execute("create table if not exists notes (id integer primary key, body text)") - conn.commit() - for i in range(ROWS): - cur.execute("insert into notes (body) values (?)", (f"note {i}",)) - conn.commit() - conn.close() - - -# ------------------------- -# SQLSpec benchmark -# ------------------------- -def bench_sqlspec(db_path: Path) -> None: - # Disable all observability for pure performance measurement - obs_config = ObservabilityConfig( - telemetry=TelemetryConfig(enable_spans=False), - logging=LoggingConfig(include_sql_hash=False, include_trace_context=False), - print_sql=False, - ) - spec = SQLSpec(observability_config=obs_config) - config = spec.add_config(SqliteConfig(connection_config={"database": str(db_path)})) - with spec.provide_session(config) as session: - session.execute("create table if not exists notes (id integer primary key, body text)") - for i in range(ROWS): - session.execute("insert into notes (body) values (?)", (f"note {i}",)) - - -def bench_sqlspec_fast_path(db_path: Path) -> None: - obs_config = ObservabilityConfig( - telemetry=TelemetryConfig(enable_spans=False), - logging=LoggingConfig(include_sql_hash=False, include_trace_context=False), - print_sql=False, - ) - spec = SQLSpec(observability_config=obs_config) - config = spec.add_config(SqliteConfig(connection_config={"database": str(db_path)})) - with spec.provide_session(config) as session: - session.execute("create table if not exists notes (id integer primary key, body text)") - session.execute("insert into notes (body) values (?)", ("warmup",)) - for i in range(ROWS): - session.execute("insert into notes (body) values (?)", (f"note {i}",)) - - -# ------------------------- -# Timing helper -# ------------------------- -def run_benchmark(fn: "Callable[[Path], None]", label: str) -> float: - times: list[float] = [] - # warm-up run (not measured) - with tempfile.TemporaryDirectory() as d: - fn(Path(d) / "warmup.db") - - for _ in range(RUNS): - with tempfile.TemporaryDirectory() as d: - db_path = Path(d) / "test.db" - start = time.perf_counter() - fn(db_path) - elapsed = time.perf_counter() - start - times.append(elapsed) - - return sum(times) / len(times) - - -def run_benchmark_allocations(fn: "Callable[[Path], None]") -> "tuple[int, int]": - """Return (current, peak) allocated bytes for a benchmark run.""" - with tempfile.TemporaryDirectory() as d: - db_path = Path(d) / "alloc.db" - tracemalloc.start() - fn(db_path) - current, peak = tracemalloc.get_traced_memory() - tracemalloc.stop() - return current, peak - - -__all__ = ( - "assert_compile_bypass", - "bench_raw_sqlite", - "bench_sqlite_sqlglot", - "bench_sqlite_sqlglot_copy", - "bench_sqlite_sqlglot_nocache", - "bench_sqlspec", - "bench_sqlspec_fast_path", - "bench_sqlspec_dict", - "profile_cache_hit_compile_calls", - "profile_fast_path_hit_rate", - "run_benchmark", -) - - -# ------------------------- -# Pure sqlite3 + sqlglot benchmark (parse once, cached SQL) -# ------------------------- -def bench_sqlite_sqlglot(db_path: Path) -> None: - """Benchmark raw sqlite3 with only sqlglot parsing overhead. - - This simulates optimal SQLSpec behavior: parse once, cache SQL, reuse. - Shows the minimum overhead from using sqlglot for SQL parsing. - """ - import sqlglot - - conn = sqlite3.connect(db_path) - cur = conn.cursor() - cur.execute("create table if not exists notes (id integer primary key, body text)") - conn.commit() - - # Parse the SQL once with sqlglot and cache the generated SQL - sql = "insert into notes (body) values (?)" - parsed = sqlglot.parse_one(sql, dialect="sqlite") - cached_sql = parsed.sql(dialect="sqlite") # Cache this! - - for i in range(ROWS): - # Use cached SQL string (like SQLSpec does on cache hit) - cur.execute(cached_sql, (f"note {i}",)) - - conn.commit() - conn.close() - - -# ------------------------- -# Pure sqlite3 + sqlglot with .sql() per call (no caching) -# ------------------------- -def bench_sqlite_sqlglot_nocache(db_path: Path) -> None: - """Benchmark raw sqlite3 with sqlglot .sql() called each time. - - This shows the cost if we regenerated SQL from AST every time, - which would be terrible and SQLSpec avoids via caching. - """ - import sqlglot - - conn = sqlite3.connect(db_path) - cur = conn.cursor() - cur.execute("create table if not exists notes (id integer primary key, body text)") - conn.commit() - - sql = "insert into notes (body) values (?)" - parsed = sqlglot.parse_one(sql, dialect="sqlite") - - for i in range(ROWS): - # Regenerate SQL each time (NO CACHING - worst case) - generated_sql = parsed.sql(dialect="sqlite") - cur.execute(generated_sql, (f"note {i}",)) - - conn.commit() - conn.close() - - -# ------------------------- -# Pure sqlite3 + sqlglot with expression.copy() benchmark -# ------------------------- -def bench_sqlite_sqlglot_copy(db_path: Path) -> None: - """Benchmark raw sqlite3 with sqlglot expression.copy() per call. - - This shows the overhead when we copy the expression each time, - which happens in some SQLSpec code paths for safety. - """ - import sqlglot - - conn = sqlite3.connect(db_path) - cur = conn.cursor() - cur.execute("create table if not exists notes (id integer primary key, body text)") - conn.commit() - - sql = "insert into notes (body) values (?)" - parsed = sqlglot.parse_one(sql, dialect="sqlite") - cached_sql = parsed.sql(dialect="sqlite") # Cache the SQL - - for i in range(ROWS): - # Copy expression each time (like SQLSpec's defensive copying) - # but still use cached SQL for execution - _ = parsed.copy() # Overhead we're measuring - cur.execute(cached_sql, (f"note {i}",)) - - conn.commit() - conn.close() - - -# ------------------------- -# SQLSpec benchmark with dict parameters -# ------------------------- -def bench_sqlspec_dict(db_path: Path) -> None: - """Benchmark with dict parameters to test sorted() removal.""" - # Disable all observability for pure performance measurement - obs_config = ObservabilityConfig( - telemetry=TelemetryConfig(enable_spans=False), - logging=LoggingConfig(include_sql_hash=False, include_trace_context=False), - print_sql=False, - ) - spec = SQLSpec(observability_config=obs_config) - config = spec.add_config(SqliteConfig(connection_config={"database": str(db_path)})) - with spec.provide_session(config) as session: - session.execute("create table if not exists notes (id integer primary key, body text)") - for i in range(ROWS): - session.execute("insert into notes (body) values (:body)", {"body": f"note {i}"}) - - -def profile_cache_hit_compile_calls(db_path: Path) -> int: - """Return pipeline compilation call count for repeated inserts.""" - obs_config = ObservabilityConfig( - telemetry=TelemetryConfig(enable_spans=False), - logging=LoggingConfig(include_sql_hash=False, include_trace_context=False), - print_sql=False, - ) - spec = SQLSpec(observability_config=obs_config) - config = spec.add_config(SqliteConfig(connection_config={"database": str(db_path)})) - - from sqlspec.core import pipeline as pipeline_module - - calls = 0 - original = pipeline_module.compile_with_pipeline - - def wrapped(*args: object, **kwargs: object) -> object: - nonlocal calls - calls += 1 - return original(*args, **kwargs) - - with spec.provide_session(config) as session: - session.execute("create table if not exists notes (id integer primary key, body text)") - pipeline_module.compile_with_pipeline = wrapped - try: - for i in range(ROWS): - session.execute("insert into notes (body) values (?)", (f"note {i}",)) - finally: - pipeline_module.compile_with_pipeline = original - - return calls - - -def profile_fast_path_hit_rate(db_path: Path) -> float: - obs_config = ObservabilityConfig( - telemetry=TelemetryConfig(enable_spans=False), - logging=LoggingConfig(include_sql_hash=False, include_trace_context=False), - print_sql=False, - ) - spec = SQLSpec(observability_config=obs_config) - config = spec.add_config(SqliteConfig(connection_config={"database": str(db_path)})) - - from sqlspec.driver import SyncDriverAdapterBase - - hits = 0 - calls = 0 - original = SyncDriverAdapterBase._try_fast_execute - - def wrapped(self: SyncDriverAdapterBase, statement: str, params: tuple[object, ...] | list[object]) -> object: - nonlocal hits, calls - calls += 1 - result = original(self, statement, params) - if result is not None: - hits += 1 - return result - - with spec.provide_session(config) as session: - session.execute("create table if not exists notes (id integer primary key, body text)") - SyncDriverAdapterBase._try_fast_execute = wrapped - try: - session.execute("insert into notes (body) values (?)", ("warmup",)) - for i in range(ROWS): - session.execute("insert into notes (body) values (?)", (f"note {i}",)) - finally: - SyncDriverAdapterBase._try_fast_execute = original - - if not calls: - return 0.0 - return hits / calls - - -def assert_compile_bypass(db_path: Path) -> None: - """Assert compile is bypassed on cache hits after initial insert.""" - calls = profile_cache_hit_compile_calls(db_path) - if calls != 1: - msg = f"Expected 1 compilation call for repeated inserts, got {calls}" - raise AssertionError(msg) - - -# ------------------------- -# Main -# ------------------------- -if __name__ == "__main__": - with tempfile.TemporaryDirectory() as d: - assert_compile_bypass(Path(d) / "compile_check.db") - - with tempfile.TemporaryDirectory() as d: - db_path = Path(d) / "profile.db" - profiler = cProfile.Profile() - profiler.enable() - bench_sqlspec(db_path) - profiler.disable() - stats = pstats.Stats(profiler).sort_stats("tottime") - stats.print_stats(30) - - raw_time = run_benchmark(bench_raw_sqlite, "raw sqlite3") - sqlspec_time = run_benchmark(bench_sqlspec, "sqlspec") - fast_path_time = run_benchmark(bench_sqlspec_fast_path, "sqlspec fast path") - - slowdown = sqlspec_time / raw_time - fast_path_slowdown = fast_path_time / raw_time - - with tempfile.TemporaryDirectory() as d: - hit_rate = profile_fast_path_hit_rate(Path(d) / "fast_path_hits.db") - - print(f"raw sqlite3: {raw_time:.4f}s") - print(f"sqlspec: {sqlspec_time:.4f}s ({slowdown:.2f}x)") - print(f"sqlspec fast path: {fast_path_time:.4f}s ({fast_path_slowdown:.2f}x)") - print(f"fast path hit rate: {hit_rate:.2%}") diff --git a/sqlspec/_typing.py b/sqlspec/_typing.py index b5547f92..6e4a3658 100644 --- a/sqlspec/_typing.py +++ b/sqlspec/_typing.py @@ -631,6 +631,7 @@ def get_sqlspec_rs() -> "Any | None": except ModuleNotFoundError: return None + __all__ = ( "ALLOYDB_CONNECTOR_INSTALLED", "ATTRS_INSTALLED", @@ -693,7 +694,6 @@ def get_sqlspec_rs() -> "Any | None": "Tracer", "TypeAdapter", "TypeAdapterStub", - "get_sqlspec_rs", "UnsetType", "UnsetTypeStub", "attrs_asdict", @@ -710,6 +710,7 @@ def get_sqlspec_rs() -> "Any | None": "cattrs_unstructure", "convert", "convert_stub", + "get_sqlspec_rs", "module_available", "trace", ) diff --git a/sqlspec/adapters/aiosqlite/driver.py b/sqlspec/adapters/aiosqlite/driver.py index d9f6f32a..c4e322cf 100644 --- a/sqlspec/adapters/aiosqlite/driver.py +++ b/sqlspec/adapters/aiosqlite/driver.py @@ -122,11 +122,11 @@ def __init__( async def _execute_raw_async(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": exc_handler = self.handle_database_exceptions() cursor_manager = self.with_cursor(self.connection) - cursor: "aiosqlite.Cursor | None" = None + cursor: aiosqlite.Cursor | None = None exc: Exception | None = None exc_handler_entered = False cursor_entered = False - result: "SQLResult | None" = None + result: SQLResult | None = None try: await exc_handler.__aenter__() @@ -139,7 +139,11 @@ async def _execute_raw_async(self, statement: "SQL", sql: str, params: Any) -> " fetched_data = await cursor.fetchall() data, column_names, row_count = collect_rows(cast("list[Any]", fetched_data), cursor.description) execution_result = self.create_execution_result( - cursor, selected_data=data, column_names=column_names, data_row_count=row_count, is_select_result=True + cursor, + selected_data=data, + column_names=column_names, + data_row_count=row_count, + is_select_result=True, ) else: affected_rows = resolve_rowcount(cursor) diff --git a/sqlspec/config.py b/sqlspec/config.py index 95f25ad3..1133178f 100644 --- a/sqlspec/config.py +++ b/sqlspec/config.py @@ -8,8 +8,8 @@ from typing_extensions import NotRequired, TypedDict -from sqlspec.core import ParameterStyle, ParameterStyleConfig, StatementConfig from sqlspec._typing import SQLSPEC_RS_INSTALLED, get_sqlspec_rs +from sqlspec.core import ParameterStyle, ParameterStyleConfig, StatementConfig from sqlspec.exceptions import MissingDependencyError from sqlspec.extensions.events import EventRuntimeHints from sqlspec.loader import SQLFileLoader diff --git a/sqlspec/core/_correlation.py b/sqlspec/core/_correlation.py index aedc1eac..c55cbb71 100644 --- a/sqlspec/core/_correlation.py +++ b/sqlspec/core/_correlation.py @@ -162,7 +162,7 @@ def _sanitize(self, value: str) -> str: the sanitized value is empty. """ sanitized = value.strip()[: self._max_length] - return sanitized if sanitized else CorrelationContext.generate() + return sanitized or CorrelationContext.generate() def __repr__(self) -> str: return f"CorrelationExtractor(headers={self._headers!r}, max_length={self._max_length!r})" diff --git a/sqlspec/core/_pool.py b/sqlspec/core/_pool.py index 42cda72b..c0c18985 100644 --- a/sqlspec/core/_pool.py +++ b/sqlspec/core/_pool.py @@ -10,7 +10,7 @@ from sqlspec.core.statement import SQL, ProcessedState -__all__ = ("ObjectPool", "get_processed_state_pool", "get_sql_pool", ) +__all__ = ("ObjectPool", "get_processed_state_pool", "get_sql_pool") T = TypeVar("T") diff --git a/sqlspec/driver/_async.py b/sqlspec/driver/_async.py index 9d5337f7..b6ecc739 100644 --- a/sqlspec/driver/_async.py +++ b/sqlspec/driver/_async.py @@ -334,7 +334,7 @@ async def _execute_raw_async(self, statement: "SQL", sql: str, params: Any) -> " exc: Exception | None = None exc_handler_entered = False cursor_entered = False - result: "SQLResult | None" = None + result: SQLResult | None = None try: await exc_handler.__aenter__() diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index fcbe1e74..0fb831ac 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -7,18 +7,7 @@ from collections import OrderedDict from contextlib import suppress from time import perf_counter -from typing import ( - TYPE_CHECKING, - Any, - ClassVar, - Final, - Literal, - NamedTuple, - NoReturn, - Protocol, - cast, - overload, -) +from typing import TYPE_CHECKING, Any, ClassVar, Final, Literal, NamedTuple, NoReturn, Protocol, cast, overload from mypy_extensions import mypyc_attr from sqlglot import exp @@ -38,28 +27,13 @@ split_sql_script, ) from sqlspec.core._pool import get_sql_pool -from sqlspec.core.compiler import OperationProfile, OperationType from sqlspec.core.metrics import StackExecutionMetrics -from sqlspec.core.parameters import ( - ParameterProcessor, - ParameterProfile, - structural_fingerprint, - value_fingerprint, -) +from sqlspec.core.parameters import ParameterProcessor, ParameterProfile, structural_fingerprint, value_fingerprint from sqlspec.data_dictionary._loader import get_data_dictionary_loader from sqlspec.data_dictionary._registry import get_dialect_config from sqlspec.driver._storage_helpers import CAPABILITY_HINTS -from sqlspec.exceptions import ( - ImproperConfigurationError, - NotFoundError, - SQLFileNotFoundError, - StorageCapabilityError, -) -from sqlspec.observability import ( - ObservabilityRuntime, - get_trace_context, - resolve_db_system, -) +from sqlspec.exceptions import ImproperConfigurationError, NotFoundError, SQLFileNotFoundError, StorageCapabilityError +from sqlspec.observability import ObservabilityRuntime, get_trace_context, resolve_db_system from sqlspec.protocols import HasDataProtocol, HasExecuteProtocol, StatementProtocol from sqlspec.typing import VersionCacheResult, VersionInfo from sqlspec.utils.logging import get_logger, log_with_context @@ -78,15 +52,12 @@ from collections.abc import Callable, Sequence from sqlspec.core import FilterTypeT, StatementFilter + from sqlspec.core.compiler import OperationProfile, OperationType from sqlspec.core.parameters._types import ConvertedParameters from sqlspec.core.stack import StatementStack from sqlspec.core.statement import ProcessedState from sqlspec.data_dictionary._types import DialectConfig - from sqlspec.storage import ( - AsyncStoragePipeline, - StorageCapabilities, - SyncStoragePipeline, - ) + from sqlspec.storage import AsyncStoragePipeline, StorageCapabilities, SyncStoragePipeline from sqlspec.typing import ForeignKeyMetadata, SchemaT, StatementParameters @@ -126,26 +97,21 @@ def _parameter_sort_key(item: "tuple[str, object]") -> float: def _select_dominant_style( - style_counts: "dict[ParameterStyle, int]", - precedence: "dict[ParameterStyle, int]", + style_counts: "dict[ParameterStyle, int]", precedence: "dict[ParameterStyle, int]" ) -> "ParameterStyle": best_style: ParameterStyle | None = None best_count = -1 best_precedence = 100 for style, count in style_counts.items(): current_precedence = precedence.get(style, 99) - if count > best_count or ( - count == best_count and current_precedence < best_precedence - ): + if count > best_count or (count == best_count and current_precedence < best_precedence): best_style = style best_count = count best_precedence = current_precedence return cast("ParameterStyle", best_style) -def _extract_pagination_placeholders_from_expression( - expression: "exp.Expression", -) -> "set[str]": +def _extract_pagination_placeholders_from_expression(expression: "exp.Expression") -> "set[str]": """Extract named placeholder names from LIMIT and OFFSET clauses of an expression. Args: @@ -200,10 +166,7 @@ def _extract_pagination_placeholders(original_sql: "SQL") -> "set[str]": if placeholders: return placeholders # Check if it has any named placeholders at all - if not, fall through - has_named = any( - isinstance(n, exp.Placeholder) and n.this is not None - for n in stmt_expr.walk() - ) + has_named = any(isinstance(n, exp.Placeholder) and n.this is not None for n in stmt_expr.walk()) if has_named: # Expression has named placeholders but none in LIMIT/OFFSET return set() @@ -310,11 +273,7 @@ def make_cache_key_hashable(obj: Any) -> Any: continue if has_array_interface(current_obj): try: - dtype_str = ( - current_obj.dtype.str - if has_dtype_str(current_obj.dtype) - else str(type(current_obj)) - ) + dtype_str = current_obj.dtype.str if has_dtype_str(current_obj.dtype) else str(type(current_obj)) shape = tuple(int(s) for s in current_obj.shape) parent[idx] = ("ndarray", dtype_str, shape) except (AttributeError, TypeError): @@ -331,10 +290,7 @@ def make_cache_key_hashable(obj: Any) -> Any: stack.append((_CONVERT_TO_TUPLE, parent, idx)) - stack.extend( - (current_obj[i], new_list, i) - for i in range(len(current_obj) - 1, -1, -1) - ) + stack.extend((current_obj[i], new_list, i) for i in range(len(current_obj) - 1, -1, -1)) continue if isinstance(current_obj, dict): @@ -352,10 +308,7 @@ def make_cache_key_hashable(obj: Any) -> Any: stack.append((_CONVERT_TO_TUPLE, parent, idx)) for i in range(len(items_list) - 1, -1, -1): - stack.extend(( - (_CONVERT_TO_TUPLE, items_list, i), - (items_list[i][1], items_list[i], 1), - )) + stack.extend(((_CONVERT_TO_TUPLE, items_list, i), (items_list[i][1], items_list[i], 1))) continue @@ -370,10 +323,7 @@ def make_cache_key_hashable(obj: Any) -> Any: stack.append((_CONVERT_TO_FROZENSET, parent, idx)) - stack.extend( - (sorted_list[i], new_list, i) - for i in range(len(sorted_list) - 1, -1, -1) - ) + stack.extend((sorted_list[i], new_list, i) for i in range(len(sorted_list) - 1, -1, -1)) continue parent[idx] = current_obj @@ -457,9 +407,7 @@ def __enter__(self) -> Self: "sqlspec.stack.native_pipeline": self.native_pipeline, "sqlspec.stack.forced_disable": self.driver.stack_native_disabled, } - self.span = self.runtime.start_span( - "sqlspec.stack.execute", attributes=attributes - ) + self.span = self.runtime.start_span("sqlspec.stack.execute", attributes=attributes) log_with_context( logger, logging.DEBUG, @@ -476,16 +424,12 @@ def __enter__(self) -> Self: ) return self - def __exit__( - self, exc_type: Any, exc: Exception | None, exc_tb: Any - ) -> Literal[False]: + def __exit__(self, exc_type: Any, exc: Exception | None, exc_tb: Any) -> Literal[False]: duration = perf_counter() - self.started self.metrics.record_duration(duration) if exc is not None: self.metrics.record_error(exc) - self.runtime.span_manager.end_span( - self.span, error=exc if exc is not None else None - ) + self.runtime.span_manager.end_span(self.span, error=exc if exc is not None else None) self.metrics.emit(self.runtime) level = logging.ERROR if exc is not None else logging.DEBUG trace_id, span_id = get_trace_context() @@ -580,9 +524,7 @@ def resolve_feature_flag(self, feature: str, version: "VersionInfo | None") -> b def list_available_features(self) -> "list[str]": """List available feature flags for this dialect.""" config = self.get_dialect_config() - features = set(config.feature_flags.keys()) | set( - config.feature_versions.keys() - ) + features = set(config.feature_flags.keys()) | set(config.feature_versions.keys()) return sorted(features) @@ -642,9 +584,7 @@ def get_cached_version_for_driver(self, driver: Any) -> "VersionCacheResult": """ return self.get_cached_version(id(driver)) - def cache_version_for_driver( - self, driver: Any, version: "VersionInfo | None" - ) -> None: + def cache_version_for_driver(self, driver: Any, version: "VersionInfo | None") -> None: """Cache version info for a driver instance. Args: @@ -672,19 +612,13 @@ def parse_version_string(self, version_str: str) -> "VersionInfo | None": groups = match.groups() major = int(groups[0]) - minor = ( - int(groups[1]) if len(groups) > VERSION_GROUPS_MIN_FOR_MINOR else 0 - ) - patch = ( - int(groups[2]) if len(groups) > VERSION_GROUPS_MIN_FOR_PATCH else 0 - ) + minor = int(groups[1]) if len(groups) > VERSION_GROUPS_MIN_FOR_MINOR else 0 + patch = int(groups[2]) if len(groups) > VERSION_GROUPS_MIN_FOR_PATCH else 0 return VersionInfo(major, minor, patch) return None - def parse_version_with_pattern( - self, pattern: "re.Pattern[str]", version_str: str - ) -> "VersionInfo | None": + def parse_version_with_pattern(self, pattern: "re.Pattern[str]", version_str: str) -> "VersionInfo | None": """Parse version string using a specific regex pattern. Args: @@ -704,16 +638,8 @@ def parse_version_with_pattern( return None major = int(groups[0]) - minor = ( - int(groups[1]) - if len(groups) > VERSION_GROUPS_MIN_FOR_MINOR and groups[1] - else 0 - ) - patch = ( - int(groups[2]) - if len(groups) > VERSION_GROUPS_MIN_FOR_PATCH and groups[2] - else 0 - ) + minor = int(groups[1]) if len(groups) > VERSION_GROUPS_MIN_FOR_MINOR and groups[1] else 0 + patch = int(groups[2]) if len(groups) > VERSION_GROUPS_MIN_FOR_PATCH and groups[2] else 0 return VersionInfo(major, minor, patch) def _resolve_log_adapter(self) -> str: @@ -725,24 +651,15 @@ def _resolve_log_adapter(self) -> str: def _log_version_detected(self, adapter: str, version: VersionInfo) -> None: """Log detected database version with db.system context.""" logger.debug( - "Detected database version", - extra={"db.system": resolve_db_system(adapter), "db.version": str(version)}, + "Detected database version", extra={"db.system": resolve_db_system(adapter), "db.version": str(version)} ) def _log_version_unavailable(self, adapter: str, reason: str) -> None: """Log that database version could not be determined.""" - logger.debug( - "Database version unavailable", - extra={"db.system": resolve_db_system(adapter), "reason": reason}, - ) + logger.debug("Database version unavailable", extra={"db.system": resolve_db_system(adapter), "reason": reason}) def _log_schema_introspect( - self, - driver: Any, - *, - schema_name: "str | None", - table_name: "str | None", - operation: str, + self, driver: Any, *, schema_name: "str | None", table_name: "str | None", operation: str ) -> None: """Log schema-level introspection activity.""" log_with_context( @@ -755,9 +672,7 @@ def _log_schema_introspect( operation=operation, ) - def _log_table_describe( - self, driver: Any, *, schema_name: "str | None", table_name: str, operation: str - ) -> None: + def _log_table_describe(self, driver: Any, *, schema_name: "str | None", table_name: str, operation: str) -> None: """Log table-level introspection activity.""" log_with_context( logger, @@ -769,9 +684,7 @@ def _log_table_describe( operation=operation, ) - def detect_version_with_queries( - self, driver: "HasExecuteProtocol", queries: "list[str]" - ) -> "VersionInfo | None": + def detect_version_with_queries(self, driver: "HasExecuteProtocol", queries: "list[str]") -> "VersionInfo | None": """Try multiple version queries to detect database version. Args: @@ -796,9 +709,7 @@ def detect_version_with_queries( parsed_version = self.parse_version_string(version_str) if parsed_version: - self._log_version_detected( - self._resolve_log_adapter(), parsed_version - ) + self._log_version_detected(self._resolve_log_adapter(), parsed_version) return parsed_version self._log_version_unavailable(self._resolve_log_adapter(), "queries_exhausted") @@ -829,9 +740,7 @@ def get_default_features(self) -> "list[str]": """ return ["supports_transactions", "supports_prepared_statements"] - def sort_tables_topologically( - self, tables: "list[str]", foreign_keys: "list[ForeignKeyMetadata]" - ) -> "list[str]": + def sort_tables_topologically(self, tables: "list[str]", foreign_keys: "list[ForeignKeyMetadata]") -> "list[str]": """Sort tables topologically based on foreign key dependencies using Python. Args: @@ -887,11 +796,7 @@ class ExecutionResult(NamedTuple): EXEC_CURSOR_RESULT: Final[int] = 0 EXEC_ROWCOUNT_OVERRIDE: Final[int] = 1 EXEC_SPECIAL_DATA: Final[int] = 2 -DEFAULT_EXECUTION_RESULT: Final["tuple[object | None, int | None, object | None]"] = ( - None, - None, - None, -) +DEFAULT_EXECUTION_RESULT: Final["tuple[object | None, int | None, object | None]"] = (None, None, None) _DEFAULT_METADATA: Final = {"status_message": "OK"} @@ -973,11 +878,7 @@ def __init__( self._query_cache = _QueryCache(_FAST_PATH_QUERY_CACHE_SIZE) self._fast_path_enabled = False self._fast_path_binder: ( - Callable[ - [Any, ParameterProfile, Any, tuple[str, ...], bool, bool], - ConvertedParameters, - ] - | None + Callable[[Any, ParameterProfile, Any, tuple[str, ...], bool, bool], ConvertedParameters] | None ) = None binder = self.driver_features.get("fast_path_binder") if binder is not None and callable(binder): @@ -990,10 +891,7 @@ def attach_observability(self, runtime: "ObservabilityRuntime") -> None: self._update_fast_path_flag() def _update_fast_path_flag(self) -> None: - self._fast_path_enabled = bool( - not self.statement_config.statement_transformers - and self.observability.is_idle, - ) + self._fast_path_enabled = bool(not self.statement_config.statement_transformers and self.observability.is_idle) @property def observability(self) -> "ObservabilityRuntime": @@ -1051,9 +949,7 @@ def _require_capability(self, capability_flag: str) -> None: human_label = CAPABILITY_HINTS.get(capability_flag, capability_flag) remediation = "Check adapter supports this capability or stage artifacts via storage pipeline." msg = f"{human_label} is not available for this adapter" - raise StorageCapabilityError( - msg, capability=capability_flag, remediation=remediation - ) + raise StorageCapabilityError(msg, capability=capability_flag, remediation=remediation) def _raise_storage_not_implemented(self, capability: str) -> None: """Raise NotImplementedError for storage operations. @@ -1066,20 +962,14 @@ def _raise_storage_not_implemented(self, capability: str) -> None: """ msg = f"{capability} is not implemented for this driver" - remediation = ( - "Override storage methods on the adapter to enable this capability." - ) - raise StorageCapabilityError( - msg, capability=capability, remediation=remediation - ) + remediation = "Override storage methods on the adapter to enable this capability." + raise StorageCapabilityError(msg, capability=capability, remediation=remediation) def _release_pooled_statement(self, statement: "SQL") -> None: if getattr(statement, "_pooled", False): get_sql_pool().release(statement) - def _fast_rebind( - self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQuery" - ) -> "ConvertedParameters": + def _fast_rebind(self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQuery") -> "ConvertedParameters": binder = self._fast_path_binder if binder is not None: return binder( @@ -1091,11 +981,7 @@ def _fast_rebind( cached.applied_wrap_types, ) config = self.statement_config.parameter_config - if ( - not cached.input_named_parameters - and not cached.applied_wrap_types - and not config.type_coercion_map - ): + if not cached.input_named_parameters and not cached.applied_wrap_types and not config.type_coercion_map: return params processor = ParameterProcessor( converter=self.statement_config.parameter_converter, @@ -1151,9 +1037,7 @@ def _build_fast_statement( ) return statement - def _try_fast_execute( - self, statement: str, params: "tuple[Any, ...] | list[Any]" - ) -> "SQLResult | None": + def _try_fast_execute(self, statement: str, params: "tuple[Any, ...] | list[Any]") -> "SQLResult | None": if not self._fast_path_enabled: return None if self.statement_config.parameter_config.needs_static_script_compilation: @@ -1163,25 +1047,16 @@ def _try_fast_execute( return None if cached.param_count != len(params): return None - if ( - isinstance(params, list) - and params - and isinstance(params[0], (tuple, list, dict)) - and len(params) > 1 - ): + if isinstance(params, list) and params and isinstance(params[0], (tuple, list, dict)) and len(params) > 1: return None rebound_params = self._fast_rebind(params, cached) compiled_sql = cached.compiled_sql output_transformer = self.statement_config.output_transformer if output_transformer: - compiled_sql, rebound_params = output_transformer( - compiled_sql, rebound_params - ) + compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) - fast_statement = self._build_fast_statement( - statement, params, cached, rebound_params - ) + fast_statement = self._build_fast_statement(statement, params, cached, rebound_params) return self._execute_raw(fast_statement, compiled_sql, rebound_params) def _execute_raw(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": @@ -1221,24 +1096,16 @@ def _maybe_cache_fast_path(self, statement: "SQL") -> None: @overload @staticmethod - def to_schema( - data: "list[dict[str, Any]]", *, schema_type: "type[SchemaT]" - ) -> "list[SchemaT]": ... + def to_schema(data: "list[dict[str, Any]]", *, schema_type: "type[SchemaT]") -> "list[SchemaT]": ... @overload @staticmethod - def to_schema( - data: "list[dict[str, Any]]", *, schema_type: None = None - ) -> "list[dict[str, Any]]": ... + def to_schema(data: "list[dict[str, Any]]", *, schema_type: None = None) -> "list[dict[str, Any]]": ... @overload @staticmethod - def to_schema( - data: "dict[str, Any]", *, schema_type: "type[SchemaT]" - ) -> "SchemaT": ... + def to_schema(data: "dict[str, Any]", *, schema_type: "type[SchemaT]") -> "SchemaT": ... @overload @staticmethod - def to_schema( - data: "dict[str, Any]", *, schema_type: None = None - ) -> "dict[str, Any]": ... + def to_schema(data: "dict[str, Any]", *, schema_type: None = None) -> "dict[str, Any]": ... @overload @staticmethod def to_schema(data: Any, *, schema_type: "type[SchemaT]") -> Any: ... @@ -1320,9 +1187,7 @@ def create_execution_result( last_inserted_id, ) - def build_statement_result( - self, statement: "SQL", execution_result: ExecutionResult - ) -> "SQLResult": + def build_statement_result(self, statement: "SQL", execution_result: ExecutionResult) -> "SQLResult": """Build and return the SQLResult from ExecutionResult data. Args: @@ -1433,17 +1298,11 @@ def prepare_statement( filters, data_parameters = self._split_parameters(parameters) if isinstance(statement, QueryBuilder): - sql_statement = self._prepare_from_builder( - statement, data_parameters, statement_config, kwargs - ) + sql_statement = self._prepare_from_builder(statement, data_parameters, statement_config, kwargs) elif isinstance(statement, SQL): - sql_statement = self._prepare_from_sql( - statement, data_parameters, statement_config, kwargs - ) + sql_statement = self._prepare_from_sql(statement, data_parameters, statement_config, kwargs) else: - sql_statement = self._prepare_from_string( - statement, data_parameters, statement_config, kwargs - ) + sql_statement = self._prepare_from_string(statement, data_parameters, statement_config, kwargs) # Cache the newly created SQL object for future use if not filters and not kwargs and isinstance(statement, str): self._statement_cache[statement] = sql_statement @@ -1451,8 +1310,7 @@ def prepare_statement( return self._apply_filters(sql_statement, filters) def _split_parameters( - self, - parameters: "tuple[StatementParameters | StatementFilter, ...]", + self, parameters: "tuple[StatementParameters | StatementFilter, ...]" ) -> "tuple[list[StatementFilter], list[StatementParameters]]": filters: list[StatementFilter] = [] data_parameters: list[StatementParameters] = [] @@ -1478,12 +1336,7 @@ def _prepare_from_builder( else sql_statement.positional_parameters ) statement_seed = sql_statement.raw_expression or sql_statement.raw_sql - return SQL( - statement_seed, - *merged_parameters, - statement_config=statement_config, - **kwargs, - ) + return SQL(statement_seed, *merged_parameters, statement_config=statement_config, **kwargs) return sql_statement def _prepare_from_sql( @@ -1500,12 +1353,7 @@ def _prepare_from_sql( else sql_statement.positional_parameters ) statement_seed = sql_statement.raw_expression or sql_statement.raw_sql - return SQL( - statement_seed, - *merged_parameters, - statement_config=statement_config, - **kwargs, - ) + return SQL(statement_seed, *merged_parameters, statement_config=statement_config, **kwargs) needs_rebuild = False if statement_config.dialect and ( @@ -1521,29 +1369,12 @@ def _prepare_from_sql( needs_rebuild = True if needs_rebuild: - statement_seed = ( - sql_statement.raw_expression - or sql_statement.raw_sql - or sql_statement.sql - ) + statement_seed = sql_statement.raw_expression or sql_statement.raw_sql or sql_statement.sql if sql_statement.is_many and sql_statement.parameters: - return SQL( - statement_seed, - sql_statement.parameters, - statement_config=statement_config, - is_many=True, - ) + return SQL(statement_seed, sql_statement.parameters, statement_config=statement_config, is_many=True) if sql_statement.named_parameters: - return SQL( - statement_seed, - statement_config=statement_config, - **sql_statement.named_parameters, - ) - return SQL( - statement_seed, - *sql_statement.positional_parameters, - statement_config=statement_config, - ) + return SQL(statement_seed, statement_config=statement_config, **sql_statement.named_parameters) + return SQL(statement_seed, *sql_statement.positional_parameters, statement_config=statement_config) return sql_statement def _prepare_from_string( @@ -1553,25 +1384,15 @@ def _prepare_from_string( statement_config: "StatementConfig", kwargs: "dict[str, Any]", ) -> "SQL": - return SQL( - statement, - *tuple(data_parameters), - statement_config=statement_config, - **kwargs, - ) + return SQL(statement, *tuple(data_parameters), statement_config=statement_config, **kwargs) - def _apply_filters( - self, sql_statement: "SQL", filters: "list[StatementFilter]" - ) -> "SQL": + def _apply_filters(self, sql_statement: "SQL", filters: "list[StatementFilter]") -> "SQL": for filter_obj in filters: sql_statement = filter_obj.append_to_statement(sql_statement) return sql_statement def split_script_statements( - self, - script: str, - statement_config: "StatementConfig", - strip_trailing_semicolon: bool = False, + self, script: str, statement_config: "StatementConfig", strip_trailing_semicolon: bool = False ) -> "list[str]": """Split a SQL script into individual statements. @@ -1590,9 +1411,7 @@ def split_script_statements( return [ sql_script.strip() for sql_script in split_sql_script( - script, - dialect=str(statement_config.dialect), - strip_trailing_terminator=strip_trailing_semicolon, + script, dialect=str(statement_config.dialect), strip_trailing_terminator=strip_trailing_semicolon ) if sql_script.strip() ] @@ -1619,10 +1438,7 @@ def prepare_driver_parameters( Parameters with TypedParameter objects unwrapped to primitive values """ - if ( - parameters is None - and statement_config.parameter_config.needs_static_script_compilation - ): + if parameters is None and statement_config.parameter_config.needs_static_script_compilation: return None if not parameters: @@ -1630,18 +1446,11 @@ def prepare_driver_parameters( if is_many: if isinstance(parameters, list): - return [ - self._format_parameter_set_for_many(param_set, statement_config) - for param_set in parameters - ] + return [self._format_parameter_set_for_many(param_set, statement_config) for param_set in parameters] return [self._format_parameter_set_for_many(parameters, statement_config)] return self._format_parameter_set(parameters, statement_config) - def _apply_coercion( - self, - value: object, - type_coercion_map: "dict[type, Callable[[Any], Any]] | None", - ) -> object: + def _apply_coercion(self, value: object, type_coercion_map: "dict[type, Callable[[Any], Any]] | None") -> object: """Apply type coercion to a single value. Args: @@ -1660,9 +1469,7 @@ def _apply_coercion( return unwrapped_value def _format_parameter_set_for_many( - self, - parameters: "StatementParameters", - statement_config: "StatementConfig", + self, parameters: "StatementParameters", statement_config: "StatementConfig" ) -> "ConvertedParameters": """Prepare a single parameter set for execute_many operations. @@ -1687,19 +1494,13 @@ def _format_parameter_set_for_many( return [coerce_value(parameters, type_coercion_map)] if isinstance(parameters, dict): - return { - k: coerce_value(v, type_coercion_map) for k, v in parameters.items() - } + return {k: coerce_value(v, type_coercion_map) for k, v in parameters.items()} coerced_params = [coerce_value(p, type_coercion_map) for p in parameters] - return ( - tuple(coerced_params) if isinstance(parameters, tuple) else coerced_params - ) + return tuple(coerced_params) if isinstance(parameters, tuple) else coerced_params def _format_parameter_set( - self, - parameters: "StatementParameters", - statement_config: "StatementConfig", + self, parameters: "StatementParameters", statement_config: "StatementConfig" ) -> "ConvertedParameters": """Prepare a single parameter set for database driver consumption. @@ -1721,44 +1522,28 @@ def _format_parameter_set( return [coerce_value(parameters, type_coercion_map)] if isinstance(parameters, dict): - if ( - statement_config.parameter_config.supported_execution_parameter_styles - and ( - ParameterStyle.NAMED_PYFORMAT - in statement_config.parameter_config.supported_execution_parameter_styles - or ParameterStyle.NAMED_COLON - in statement_config.parameter_config.supported_execution_parameter_styles - ) + if statement_config.parameter_config.supported_execution_parameter_styles and ( + ParameterStyle.NAMED_PYFORMAT in statement_config.parameter_config.supported_execution_parameter_styles + or ParameterStyle.NAMED_COLON in statement_config.parameter_config.supported_execution_parameter_styles ): - return { - k: coerce_value(v, type_coercion_map) for k, v in parameters.items() - } + return {k: coerce_value(v, type_coercion_map) for k, v in parameters.items()} if statement_config.parameter_config.default_parameter_style in { ParameterStyle.NUMERIC, ParameterStyle.QMARK, ParameterStyle.POSITIONAL_PYFORMAT, }: sorted_items = sorted(parameters.items(), key=_parameter_sort_key) - return [ - coerce_value(value, type_coercion_map) for _, value in sorted_items - ] + return [coerce_value(value, type_coercion_map) for _, value in sorted_items] - return { - k: coerce_value(v, type_coercion_map) for k, v in parameters.items() - } + return {k: coerce_value(v, type_coercion_map) for k, v in parameters.items()} coerced_params = [coerce_value(p, type_coercion_map) for p in parameters] - if statement_config.parameter_config.preserve_parameter_format and isinstance( - parameters, tuple - ): + if statement_config.parameter_config.preserve_parameter_format and isinstance(parameters, tuple): return tuple(coerced_params) return coerced_params def _get_compiled_sql( - self, - statement: "SQL", - statement_config: "StatementConfig", - flatten_single_parameters: bool = False, + self, statement: "SQL", statement_config: "StatementConfig", flatten_single_parameters: bool = False ) -> "tuple[str, object]": """Get compiled SQL with parameter style conversion and caching. @@ -1775,17 +1560,12 @@ def _get_compiled_sql( """ compiled_statement, prepared_parameters = self._get_compiled_statement( - statement, - statement_config, - flatten_single_parameters=flatten_single_parameters, + statement, statement_config, flatten_single_parameters=flatten_single_parameters ) return compiled_statement.compiled_sql, prepared_parameters def _get_compiled_statement( - self, - statement: "SQL", - statement_config: "StatementConfig", - flatten_single_parameters: bool = False, + self, statement: "SQL", statement_config: "StatementConfig", flatten_single_parameters: bool = False ) -> "tuple[CachedStatement, object]": """Compile SQL and return cached statement metadata plus prepared parameters. @@ -1799,15 +1579,10 @@ def _get_compiled_statement( if getattr(statement, "_compiled_from_cache", False): compiled_sql, execution_parameters = statement.compile() prepared_parameters = self.prepare_driver_parameters( - execution_parameters, - statement_config, - is_many=statement.is_many, - prepared_statement=statement, + execution_parameters, statement_config, is_many=statement.is_many, prepared_statement=statement ) cached_statement = CachedStatement( - compiled_sql=compiled_sql, - parameters=prepared_parameters, - expression=statement.expression, + compiled_sql=compiled_sql, parameters=prepared_parameters, expression=statement.expression ) self._maybe_cache_fast_path(statement) return cached_statement, prepared_parameters @@ -1845,9 +1620,7 @@ def _get_compiled_statement( cache_key = None cache = None if cache_config.compiled_cache_enabled and statement_config.enable_caching: - cache_key = self._generate_compilation_cache_key( - statement, statement_config, flatten_single_parameters - ) + cache_key = self._generate_compilation_cache_key(statement, statement_config, flatten_single_parameters) cache = get_cache() cached_result = cache.get_statement(cache_key, dialect_key) if cached_result is not None and isinstance(cached_result, CachedStatement): @@ -1856,10 +1629,7 @@ def _get_compiled_statement( # Compile with the statement's parameters to get correctly processed values. compiled_sql, execution_parameters = statement.compile() prepared_parameters = self.prepare_driver_parameters( - execution_parameters, - statement_config, - is_many=statement.is_many, - prepared_statement=statement, + execution_parameters, statement_config, is_many=statement.is_many, prepared_statement=statement ) # Return cached SQL metadata but with newly processed parameters # Preserve list type for execute_many operations (some drivers require list, not tuple) @@ -1875,21 +1645,12 @@ def _get_compiled_statement( compiled_sql, execution_parameters = statement.compile() prepared_parameters = self.prepare_driver_parameters( - execution_parameters, - statement_config, - is_many=statement.is_many, - prepared_statement=statement, + execution_parameters, statement_config, is_many=statement.is_many, prepared_statement=statement ) - cached_parameters = ( - tuple(prepared_parameters) - if isinstance(prepared_parameters, list) - else prepared_parameters - ) + cached_parameters = tuple(prepared_parameters) if isinstance(prepared_parameters, list) else prepared_parameters cached_statement = CachedStatement( - compiled_sql=compiled_sql, - parameters=cached_parameters, - expression=statement.expression, + compiled_sql=compiled_sql, parameters=cached_parameters, expression=statement.expression ) if cache_key is not None and cache is not None: @@ -1899,10 +1660,7 @@ def _get_compiled_statement( return cached_statement, prepared_parameters def _generate_compilation_cache_key( - self, - statement: "SQL", - config: "StatementConfig", - flatten_single_parameters: bool, + self, statement: "SQL", config: "StatementConfig", flatten_single_parameters: bool ) -> str: """Generate cache key that includes all compilation context. @@ -1910,10 +1668,7 @@ def _generate_compilation_cache_key( preventing cache contamination between different compilation contexts. """ statement_transformers = ( - tuple( - _callable_cache_key(transformer) - for transformer in config.statement_transformers - ) + tuple(_callable_cache_key(transformer) for transformer in config.statement_transformers) if config.statement_transformers else () ) @@ -1935,11 +1690,11 @@ def _generate_compilation_cache_key( if params is None or (isinstance(params, (list, tuple, dict)) and not params): return f"compiled:{hash(statement.sql)}:{context_hash}" - if isinstance(params, tuple) and all( - isinstance(p, (int, str, bytes, bool, type(None))) for p in params - ): + if isinstance(params, tuple) and all(isinstance(p, (int, str, bytes, bool, type(None))) for p in params): try: - return f"compiled:{hash((statement.sql, params, statement.is_many, statement.is_script))}:{context_hash}" + return ( + f"compiled:{hash((statement.sql, params, statement.is_many, statement.is_script))}:{context_hash}" + ) except TypeError: pass @@ -1950,17 +1705,10 @@ def _generate_compilation_cache_key( params_fingerprint = value_fingerprint(params) else: params_fingerprint = structural_fingerprint(params) - base_hash = hash(( - statement.sql, - params_fingerprint, - statement.is_many, - statement.is_script, - )) + base_hash = hash((statement.sql, params_fingerprint, statement.is_many, statement.is_script)) return f"compiled:{base_hash}:{context_hash}" - def _get_dominant_parameter_style( - self, parameters: "list[Any]" - ) -> "ParameterStyle | None": + def _get_dominant_parameter_style(self, parameters: "list[Any]") -> "ParameterStyle | None": """Determine the dominant parameter style from parameter info list. Args: @@ -2087,23 +1835,15 @@ def _create_count_query(self, original_sql: "SQL") -> "SQL": count_expr.set("joins", [join.copy() for join in joins]) if expr.args.get("where"): - count_expr = count_expr.where( - cast("exp.Expression", expr.args.get("where")).copy(), - copy=False, - ) + count_expr = count_expr.where(cast("exp.Expression", expr.args.get("where")).copy(), copy=False) if expr.args.get("having"): - count_expr = count_expr.having( - cast("exp.Expression", expr.args.get("having")).copy(), - copy=False, - ) + count_expr = count_expr.having(cast("exp.Expression", expr.args.get("having")).copy(), copy=False) if cte is not None: count_expr.set("with_", cte.copy()) # Filter out pagination parameters (limit/offset) captured before compile() filtered_named_params = { - k: v - for k, v in original_sql.named_parameters.items() - if k not in pagination_params + k: v for k, v in original_sql.named_parameters.items() if k not in pagination_params } return SQL( count_expr, @@ -2117,11 +1857,7 @@ def _create_count_query(self, original_sql: "SQL") -> "SQL": if cte is not None: count_expr.set("with_", cte.copy()) # Filter out pagination parameters (limit/offset) captured before compile() - filtered_named_params = { - k: v - for k, v in original_sql.named_parameters.items() - if k not in pagination_params - } + filtered_named_params = {k: v for k, v in original_sql.named_parameters.items() if k not in pagination_params} return SQL( count_expr, *original_sql.positional_parameters, @@ -2129,9 +1865,7 @@ def _create_count_query(self, original_sql: "SQL") -> "SQL": **filtered_named_params, ) - def _add_count_over_column( - self, original_sql: "SQL", alias: str = "_total_count" - ) -> "SQL": + def _add_count_over_column(self, original_sql: "SQL", alias: str = "_total_count") -> "SQL": """Add a COUNT(*) OVER() column to the SELECT statement for inline total counts. This method modifies the SELECT to include a window function that returns diff --git a/sqlspec/migrations/commands.py b/sqlspec/migrations/commands.py index 94311309..1e18300e 100644 --- a/sqlspec/migrations/commands.py +++ b/sqlspec/migrations/commands.py @@ -10,6 +10,7 @@ from collections.abc import Awaitable, Callable from typing import TYPE_CHECKING, Any, ParamSpec, TypeVar, cast +import anyio from rich.console import Console from rich.table import Table @@ -1965,7 +1966,7 @@ async def squash( return if not yes: - response = input("\nProceed with squash? [y/N]: ") + response = await anyio.to_thread.run_sync(input, "\nProceed with squash? [y/N]: ") if response.lower() != "y": console.print("[yellow]Squash cancelled[/]") return @@ -2038,7 +2039,7 @@ async def fix(self, dry_run: bool = False, update_database: bool = True, yes: bo return if not yes: - response = input("\nProceed with conversion? [y/N]: ") + response = await anyio.to_thread.run_sync(input, "\nProceed with conversion? [y/N]: ") if response.lower() != "y": console.print("[yellow]Conversion cancelled[/]") return diff --git a/sqlspec/typing.py b/sqlspec/typing.py index cf2da436..0c4ce504 100644 --- a/sqlspec/typing.py +++ b/sqlspec/typing.py @@ -24,7 +24,6 @@ PROMETHEUS_INSTALLED, PYARROW_INSTALLED, PYDANTIC_INSTALLED, - SQLSPEC_RS_INSTALLED, UNSET, UUID_UTILS_INSTALLED, ArrowRecordBatch, @@ -65,7 +64,6 @@ cattrs_structure, cattrs_unstructure, convert, - get_sqlspec_rs, module_available, trace, ) diff --git a/sqlspec/utils/fixtures.py b/sqlspec/utils/fixtures.py index 9634bfcf..a2f8aeab 100644 --- a/sqlspec/utils/fixtures.py +++ b/sqlspec/utils/fixtures.py @@ -9,6 +9,8 @@ from pathlib import Path from typing import TYPE_CHECKING, Any +from anyio import Path as AsyncPath + from sqlspec.storage import storage_registry from sqlspec.utils.serializers import from_json as decode_json from sqlspec.utils.serializers import schema_dump @@ -235,7 +237,7 @@ async def write_fixture_async( """ if storage_backend == "local": uri = "file://" - storage_kwargs["base_path"] = str(Path(fixtures_path).resolve()) + storage_kwargs["base_path"] = str(await AsyncPath(fixtures_path).resolve()) else: uri = storage_backend diff --git a/tests/unit/adapters/test_sync_adapters.py b/tests/unit/adapters/test_sync_adapters.py index 999f3210..5713ef05 100644 --- a/tests/unit/adapters/test_sync_adapters.py +++ b/tests/unit/adapters/test_sync_adapters.py @@ -9,8 +9,8 @@ from sqlspec.core import SQL, ParameterStyle, ParameterStyleConfig, SQLResult, StatementConfig, get_default_config from sqlspec.driver import ExecutionResult from sqlspec.exceptions import NotFoundError, SQLSpecError -from sqlspec.typing import Empty from sqlspec.observability import ObservabilityConfig, ObservabilityRuntime +from sqlspec.typing import Empty from tests.unit.adapters.conftest import MockSyncConnection, MockSyncDriver pytestmark = pytest.mark.xdist_group("adapter_unit") diff --git a/tests/unit/driver/test_fast_path.py b/tests/unit/driver/test_fast_path.py index dd108e46..cdbb9d5d 100644 --- a/tests/unit/driver/test_fast_path.py +++ b/tests/unit/driver/test_fast_path.py @@ -22,11 +22,17 @@ def _execute_raw(self, statement: Any, sql: str, params: Any) -> Any: def test_query_cache_lru_eviction() -> None: cache = _QueryCache(max_size=2) - cache.set("a", CachedQuery("SQL_A", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) - cache.set("b", CachedQuery("SQL_B", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) + cache.set( + "a", CachedQuery("SQL_A", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1) + ) + cache.set( + "b", CachedQuery("SQL_B", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1) + ) assert cache.get("a") is not None - cache.set("c", CachedQuery("SQL_C", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) + cache.set( + "c", CachedQuery("SQL_C", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1) + ) assert cache.get("b") is None assert cache.get("a") is not None @@ -36,10 +42,18 @@ def test_query_cache_lru_eviction() -> None: def test_query_cache_update_moves_to_end() -> None: cache = _QueryCache(max_size=2) - cache.set("a", CachedQuery("SQL_A", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) - cache.set("b", CachedQuery("SQL_B", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) - cache.set("a", CachedQuery("SQL_A2", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 2)) - cache.set("c", CachedQuery("SQL_C", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1)) + cache.set( + "a", CachedQuery("SQL_A", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1) + ) + cache.set( + "b", CachedQuery("SQL_B", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1) + ) + cache.set( + "a", CachedQuery("SQL_A2", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 2) + ) + cache.set( + "c", CachedQuery("SQL_C", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1) + ) assert cache.get("b") is None entry = cache.get("a") @@ -186,9 +200,7 @@ async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> obje @pytest.mark.asyncio -async def test_async_execute_skips_fast_path_with_statement_config_override( - mock_async_driver, monkeypatch -) -> None: +async def test_async_execute_skips_fast_path_with_statement_config_override(mock_async_driver, monkeypatch) -> None: called = False async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: From 6cc2eb2debe0fc641ea2e96196c1c9c2820665d5 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 21:31:16 +0000 Subject: [PATCH 51/66] refactor(driver): extract QueryCache to _query_cache.py - Create new sqlspec/driver/_query_cache.py module - Move CachedQuery namedtuple and QueryCache class - Rename _QueryCache to QueryCache (now public) - Rename _FAST_PATH_QUERY_CACHE_SIZE to QC_MAX_SIZE - Add clear() and __len__() methods to QueryCache - Update test imports - Remove unused OrderedDict import from _common.py Part of driver-arch-cleanup PRD, Chapter 1: qc-extract --- sqlspec/driver/_common.py | 49 +++++-------------------- sqlspec/driver/_query_cache.py | 56 +++++++++++++++++++++++++++++ tests/unit/driver/test_fast_path.py | 33 ++++++++--------- 3 files changed, 81 insertions(+), 57 deletions(-) create mode 100644 sqlspec/driver/_query_cache.py diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index 0fb831ac..fdb80a3d 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -4,7 +4,6 @@ import hashlib import logging import re -from collections import OrderedDict from contextlib import suppress from time import perf_counter from typing import TYPE_CHECKING, Any, ClassVar, Final, Literal, NamedTuple, NoReturn, Protocol, cast, overload @@ -31,6 +30,7 @@ from sqlspec.core.parameters import ParameterProcessor, ParameterProfile, structural_fingerprint, value_fingerprint from sqlspec.data_dictionary._loader import get_data_dictionary_loader from sqlspec.data_dictionary._registry import get_dialect_config +from sqlspec.driver._query_cache import QC_MAX_SIZE, CachedQuery, QueryCache from sqlspec.driver._storage_helpers import CAPABILITY_HINTS from sqlspec.exceptions import ImproperConfigurationError, NotFoundError, SQLFileNotFoundError, StorageCapabilityError from sqlspec.observability import ObservabilityRuntime, get_trace_context, resolve_db_system @@ -49,10 +49,9 @@ ) if TYPE_CHECKING: - from collections.abc import Callable, Sequence + from collections.abc import Awaitable, Callable, Sequence from sqlspec.core import FilterTypeT, StatementFilter - from sqlspec.core.compiler import OperationProfile, OperationType from sqlspec.core.parameters._types import ConvertedParameters from sqlspec.core.stack import StatementStack from sqlspec.core.statement import ProcessedState @@ -800,40 +799,6 @@ class ExecutionResult(NamedTuple): _DEFAULT_METADATA: Final = {"status_message": "OK"} -_FAST_PATH_QUERY_CACHE_SIZE: Final = 1024 - - -class CachedQuery(NamedTuple): - compiled_sql: str - parameter_profile: "ParameterProfile" - input_named_parameters: "tuple[str, ...]" - applied_wrap_types: bool - parameter_casts: "dict[int, str]" - operation_type: "OperationType" - operation_profile: "OperationProfile" - param_count: int - - -class _QueryCache: - __slots__ = ("_cache", "_max_size") - - def __init__(self, max_size: int) -> None: - self._cache: OrderedDict[str, CachedQuery] = OrderedDict() - self._max_size = max_size - - def get(self, sql: str) -> CachedQuery | None: - entry = self._cache.get(sql) - if entry is None: - return None - self._cache.move_to_end(sql) - return entry - - def set(self, sql: str, entry: CachedQuery) -> None: - if sql in self._cache: - self._cache.move_to_end(sql) - elif len(self._cache) >= self._max_size: - self._cache.popitem(last=False) - self._cache[sql] = entry @mypyc_attr(allow_interpreted_subclasses=True) @@ -875,7 +840,7 @@ def __init__( self.driver_features = driver_features or {} self._observability = observability self._statement_cache: dict[str, SQL] = {} - self._query_cache = _QueryCache(_FAST_PATH_QUERY_CACHE_SIZE) + self._query_cache = QueryCache(QC_MAX_SIZE) self._fast_path_enabled = False self._fast_path_binder: ( Callable[[Any, ParameterProfile, Any, tuple[str, ...], bool, bool], ConvertedParameters] | None @@ -1037,7 +1002,9 @@ def _build_fast_statement( ) return statement - def _try_fast_execute(self, statement: str, params: "tuple[Any, ...] | list[Any]") -> "SQLResult | None": + def _try_cached_compiled( + self, statement: str, params: "tuple[Any, ...] | list[Any]" + ) -> "SQLResult | None": if not self._fast_path_enabled: return None if self.statement_config.parameter_config.needs_static_script_compilation: @@ -1057,9 +1024,9 @@ def _try_fast_execute(self, statement: str, params: "tuple[Any, ...] | list[Any] compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) fast_statement = self._build_fast_statement(statement, params, cached, rebound_params) - return self._execute_raw(fast_statement, compiled_sql, rebound_params) + return cast("SQLResult", self._execute_compiled(fast_statement, compiled_sql, rebound_params)) - def _execute_raw(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": + def _execute_compiled(self, statement: "SQL", sql: str, params: Any) -> "SQLResult | Awaitable[SQLResult]": raise NotImplementedError def _maybe_cache_fast_path(self, statement: "SQL") -> None: diff --git a/sqlspec/driver/_query_cache.py b/sqlspec/driver/_query_cache.py new file mode 100644 index 00000000..d3ad34d3 --- /dev/null +++ b/sqlspec/driver/_query_cache.py @@ -0,0 +1,56 @@ +"""Query cache for fast-path statement execution.""" + +from collections import OrderedDict +from typing import TYPE_CHECKING, Final, NamedTuple + +if TYPE_CHECKING: + from sqlspec.core.compiler import OperationProfile, OperationType + from sqlspec.core.parameters import ParameterProfile + +__all__ = ("QC_MAX_SIZE", "CachedQuery", "QueryCache") + +QC_MAX_SIZE: Final[int] = 1024 + + +class CachedQuery(NamedTuple): + """Cached query metadata for fast-path execution.""" + + compiled_sql: str + parameter_profile: "ParameterProfile" + input_named_parameters: "tuple[str, ...]" + applied_wrap_types: bool + parameter_casts: "dict[int, str]" + operation_type: "OperationType" + operation_profile: "OperationProfile" + param_count: int + + +class QueryCache: + """LRU cache for compiled query metadata.""" + + __slots__ = ("_cache", "_max_size") + + def __init__(self, max_size: int = QC_MAX_SIZE) -> None: + self._cache: OrderedDict[str, CachedQuery] = OrderedDict() + self._max_size = max_size + + def get(self, sql: str) -> "CachedQuery | None": + entry = self._cache.get(sql) + if entry is None: + return None + self._cache.move_to_end(sql) + return entry + + def set(self, sql: str, entry: "CachedQuery") -> None: + if sql in self._cache: + self._cache.move_to_end(sql) + elif len(self._cache) >= self._max_size: + self._cache.popitem(last=False) + self._cache[sql] = entry + + def clear(self) -> None: + """Clear all cached entries.""" + self._cache.clear() + + def __len__(self) -> int: + return len(self._cache) diff --git a/tests/unit/driver/test_fast_path.py b/tests/unit/driver/test_fast_path.py index cdbb9d5d..7ff7e334 100644 --- a/tests/unit/driver/test_fast_path.py +++ b/tests/unit/driver/test_fast_path.py @@ -2,25 +2,26 @@ """Unit tests for fast-path query cache behavior.""" from concurrent.futures import ThreadPoolExecutor -from typing import Any +from typing import Any, cast import pytest from sqlspec.core import ParameterStyle, ParameterStyleConfig, StatementConfig from sqlspec.core.compiler import OperationProfile from sqlspec.core.parameters import ParameterInfo, ParameterProfile -from sqlspec.driver._common import CachedQuery, CommonDriverAttributesMixin, _QueryCache +from sqlspec.driver._common import CachedQuery, CommonDriverAttributesMixin +from sqlspec.driver._query_cache import QueryCache class _FakeDriver(CommonDriverAttributesMixin): __slots__ = () - def _execute_raw(self, statement: Any, sql: str, params: Any) -> Any: + def _execute_compiled(self, statement: Any, sql: str, params: Any) -> Any: return (statement, sql, params) def test_query_cache_lru_eviction() -> None: - cache = _QueryCache(max_size=2) + cache = QueryCache(max_size=2) cache.set( "a", CachedQuery("SQL_A", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1) @@ -40,7 +41,7 @@ def test_query_cache_lru_eviction() -> None: def test_query_cache_update_moves_to_end() -> None: - cache = _QueryCache(max_size=2) + cache = QueryCache(max_size=2) cache.set( "a", CachedQuery("SQL_A", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 1) @@ -62,7 +63,7 @@ def test_query_cache_update_moves_to_end() -> None: assert entry.param_count == 2 -def test_try_fast_execute_cache_hit_rebinds() -> None: +def test_try_cached_compiled_cache_hit_rebinds() -> None: config = StatementConfig( parameter_config=ParameterStyleConfig( default_parameter_style=ParameterStyle.QMARK, supported_parameter_styles={ParameterStyle.QMARK} @@ -83,16 +84,16 @@ def test_try_fast_execute_cache_hit_rebinds() -> None: ) driver._query_cache.set("SELECT * FROM t WHERE id = ?", cached) - result = driver._try_fast_execute("SELECT * FROM t WHERE id = ?", (1,)) + result = driver._try_cached_compiled("SELECT * FROM t WHERE id = ?", (1,)) assert result is not None - statement, sql, params = result + statement, sql, params = cast("tuple[Any, str, Any]", result) assert sql == "SELECT * FROM t WHERE id = ?" assert params == (1,) assert statement.operation_type == "SELECT" -def test_fast_path_binder_override() -> None: +def test_cached_compiled_binder_override() -> None: config = StatementConfig( parameter_config=ParameterStyleConfig( default_parameter_style=ParameterStyle.QMARK, supported_parameter_styles={ParameterStyle.QMARK} @@ -125,10 +126,10 @@ def binder( ) driver._query_cache.set("SELECT * FROM t WHERE id = ?", cached) - result = driver._try_fast_execute("SELECT * FROM t WHERE id = ?", (1,)) + result = driver._try_cached_compiled("SELECT * FROM t WHERE id = ?", (1,)) assert result is not None - _, _, params = result + _, _, params = cast("tuple[Any, str, Any]", result) assert params == ("bound",) @@ -140,7 +141,7 @@ def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: called["args"] = (statement, params) return sentinel - monkeypatch.setattr(mock_sync_driver, "_try_fast_execute", _fake_try) + monkeypatch.setattr(mock_sync_driver, "_try_cached_compiled", _fake_try) mock_sync_driver._fast_path_enabled = True result = mock_sync_driver.execute("SELECT ?", (1,)) @@ -157,7 +158,7 @@ def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: called = True return object() - monkeypatch.setattr(mock_sync_driver, "_try_fast_execute", _fake_try) + monkeypatch.setattr(mock_sync_driver, "_try_cached_compiled", _fake_try) mock_sync_driver._fast_path_enabled = True statement_config = mock_sync_driver.statement_config.replace() @@ -190,7 +191,7 @@ async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> obje called["args"] = (statement, params) return sentinel - monkeypatch.setattr(mock_async_driver, "_try_fast_execute_async", _fake_try) + monkeypatch.setattr(mock_async_driver, "_try_cached_compiled", _fake_try) mock_async_driver._fast_path_enabled = True result = await mock_async_driver.execute("SELECT ?", (1,)) @@ -208,7 +209,7 @@ async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> obje called = True return object() - monkeypatch.setattr(mock_async_driver, "_try_fast_execute_async", _fake_try) + monkeypatch.setattr(mock_async_driver, "_try_cached_compiled", _fake_try) mock_async_driver._fast_path_enabled = True statement_config = mock_async_driver.statement_config.replace() @@ -234,7 +235,7 @@ async def test_async_execute_populates_fast_path_cache_on_normal_path(mock_async def test_query_cache_thread_safety() -> None: - cache = _QueryCache(max_size=32) + cache = QueryCache(max_size=32) cached = CachedQuery("SQL", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 0) for idx in range(16): cache.set(str(idx), cached) From 61d1ff92fce218b081d65cb44beb6c840a7fbee1 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 21:36:04 +0000 Subject: [PATCH 52/66] refactor(driver): rename fast-path methods to qc_* convention MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Attribute renames: - _fast_path_binder → _qc_binder - _fast_path_enabled → _qc_enabled - _query_cache → _qc Method renames: - _update_fast_path_flag → _update_qc_flag - _fast_rebind → qc_rebind - _build_fast_statement → qc_build - _try_cached_compiled → qc_lookup - _execute_compiled → qc_execute - _maybe_cache_fast_path → qc_store - _configure_fast_path_binder → _configure_qc_binder Test file renamed: test_fast_path.py → test_query_cache.py Part of driver-arch-cleanup PRD, Chapter 2: qc-rename --- sqlspec/adapters/aiosqlite/driver.py | 2 +- sqlspec/adapters/sqlite/driver.py | 4 +- sqlspec/config.py | 10 ++-- sqlspec/driver/_async.py | 18 +++--- sqlspec/driver/_common.py | 56 +++++++++---------- sqlspec/driver/_sync.py | 8 ++- ...{test_fast_path.py => test_query_cache.py} | 48 ++++++++-------- 7 files changed, 75 insertions(+), 71 deletions(-) rename tests/unit/driver/{test_fast_path.py => test_query_cache.py} (83%) diff --git a/sqlspec/adapters/aiosqlite/driver.py b/sqlspec/adapters/aiosqlite/driver.py index c4e322cf..9d14e482 100644 --- a/sqlspec/adapters/aiosqlite/driver.py +++ b/sqlspec/adapters/aiosqlite/driver.py @@ -119,7 +119,7 @@ def __init__( # CORE DISPATCH METHODS # ───────────────────────────────────────────────────────────────────────────── - async def _execute_raw_async(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": + async def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": exc_handler = self.handle_database_exceptions() cursor_manager = self.with_cursor(self.connection) cursor: aiosqlite.Cursor | None = None diff --git a/sqlspec/adapters/sqlite/driver.py b/sqlspec/adapters/sqlite/driver.py index 842da685..4c2e4b73 100644 --- a/sqlspec/adapters/sqlite/driver.py +++ b/sqlspec/adapters/sqlite/driver.py @@ -134,7 +134,7 @@ def __init__( # CORE DISPATCH METHODS # ───────────────────────────────────────────────────────────────────────────── - def _execute_raw(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": + def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": exc_handler = self.handle_database_exceptions() try: try: @@ -166,6 +166,8 @@ def _execute_raw(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": raise exc_handler.pending_exception from None finally: self._release_pooled_statement(statement) + msg = "Execution failed to return a result." + raise RuntimeError(msg) def dispatch_execute(self, cursor: "sqlite3.Cursor", statement: "SQL") -> "ExecutionResult": """Execute single SQL statement. diff --git a/sqlspec/config.py b/sqlspec/config.py index 1133178f..921b852e 100644 --- a/sqlspec/config.py +++ b/sqlspec/config.py @@ -881,7 +881,7 @@ def _configure_observability_extensions(self) -> None: if updated is not self.observability_config: self.observability_config = updated - def _configure_fast_path_binder(self) -> None: + def _configure_qc_binder(self) -> None: """Attach sqlspec_rs fast-path binder when available.""" if "fast_path_binder" in self.driver_features: @@ -1222,7 +1222,7 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} - self._configure_fast_path_binder() + self._configure_qc_binder() self._storage_capabilities = None self.driver_features.setdefault("storage_capabilities", self.storage_capabilities()) self._promote_driver_feature_hooks() @@ -1394,7 +1394,7 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} - self._configure_fast_path_binder() + self._configure_qc_binder() self._promote_driver_feature_hooks() self._configure_observability_extensions() @@ -1565,7 +1565,7 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} - self._configure_fast_path_binder() + self._configure_qc_binder() self._storage_capabilities = None self.driver_features.setdefault("storage_capabilities", self.storage_capabilities()) self._promote_driver_feature_hooks() @@ -1771,7 +1771,7 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} - self._configure_fast_path_binder() + self._configure_qc_binder() self._storage_capabilities = None self.driver_features.setdefault("storage_capabilities", self.storage_capabilities()) self._promote_driver_feature_hooks() diff --git a/sqlspec/driver/_async.py b/sqlspec/driver/_async.py index b6ecc739..b6a8f022 100644 --- a/sqlspec/driver/_async.py +++ b/sqlspec/driver/_async.py @@ -302,14 +302,14 @@ async def dispatch_special_handling(self, cursor: Any, statement: "SQL") -> "SQL _ = (cursor, statement) return None - async def _try_fast_execute_async( + async def qc_lookup( self, statement: str, params: "tuple[Any, ...] | list[Any]" ) -> "SQLResult | None": - if not self._fast_path_enabled: + if not self._qc_enabled: return None if self.statement_config.parameter_config.needs_static_script_compilation: return None - cached = self._query_cache.get(statement) + cached = self._qc.get(statement) if cached is None: return None if cached.param_count != len(params): @@ -317,16 +317,16 @@ async def _try_fast_execute_async( if isinstance(params, list) and params and isinstance(params[0], (tuple, list, dict)) and len(params) > 1: return None - rebound_params = self._fast_rebind(params, cached) + rebound_params = self.qc_rebind(params, cached) compiled_sql = cached.compiled_sql output_transformer = self.statement_config.output_transformer if output_transformer: compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) - fast_statement = self._build_fast_statement(statement, params, cached, rebound_params) - return await self._execute_raw_async(fast_statement, compiled_sql, rebound_params) + fast_statement = self.qc_build(statement, params, cached, rebound_params) + return await self.qc_execute(fast_statement, compiled_sql, rebound_params) - async def _execute_raw_async(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": + async def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": _ = (sql, params) exc_handler = self.handle_database_exceptions() cursor_manager = self.with_cursor(self.connection) @@ -432,14 +432,14 @@ async def execute( ) -> "SQLResult": """Execute a statement with parameter handling.""" if ( - self._fast_path_enabled + self._qc_enabled and (statement_config is None or statement_config is self.statement_config) and isinstance(statement, str) and len(parameters) == 1 and isinstance(parameters[0], (tuple, list)) and not kwargs ): - fast_result = await self._try_fast_execute_async(statement, parameters[0]) + fast_result = await self.qc_lookup(statement, parameters[0]) if fast_result is not None: return fast_result sql_statement = self.prepare_statement( diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index fdb80a3d..32014dda 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -806,10 +806,10 @@ class CommonDriverAttributesMixin: """Common attributes and methods for driver adapters.""" __slots__ = ( - "_fast_path_binder", - "_fast_path_enabled", "_observability", - "_query_cache", + "_qc", + "_qc_binder", + "_qc_enabled", "_statement_cache", "connection", "driver_features", @@ -840,23 +840,23 @@ def __init__( self.driver_features = driver_features or {} self._observability = observability self._statement_cache: dict[str, SQL] = {} - self._query_cache = QueryCache(QC_MAX_SIZE) - self._fast_path_enabled = False - self._fast_path_binder: ( + self._qc = QueryCache(QC_MAX_SIZE) + self._qc_enabled = False + self._qc_binder: ( Callable[[Any, ParameterProfile, Any, tuple[str, ...], bool, bool], ConvertedParameters] | None ) = None binder = self.driver_features.get("fast_path_binder") if binder is not None and callable(binder): - self._fast_path_binder = binder - self._update_fast_path_flag() + self._qc_binder = binder + self._update_qc_flag() def attach_observability(self, runtime: "ObservabilityRuntime") -> None: """Attach or replace the observability runtime.""" self._observability = runtime - self._update_fast_path_flag() + self._update_qc_flag() - def _update_fast_path_flag(self) -> None: - self._fast_path_enabled = bool(not self.statement_config.statement_transformers and self.observability.is_idle) + def _update_qc_flag(self) -> None: + self._qc_enabled = bool(not self.statement_config.statement_transformers and self.observability.is_idle) @property def observability(self) -> "ObservabilityRuntime": @@ -934,8 +934,8 @@ def _release_pooled_statement(self, statement: "SQL") -> None: if getattr(statement, "_pooled", False): get_sql_pool().release(statement) - def _fast_rebind(self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQuery") -> "ConvertedParameters": - binder = self._fast_path_binder + def qc_rebind(self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQuery") -> "ConvertedParameters": + binder = self._qc_binder if binder is not None: return binder( params, @@ -963,7 +963,7 @@ def _fast_rebind(self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQue apply_wrap_types=cached.applied_wrap_types, ) - def _build_fast_statement( + def qc_build( self, sql: str, params: "tuple[Any, ...] | list[Any]", @@ -1002,14 +1002,14 @@ def _build_fast_statement( ) return statement - def _try_cached_compiled( + def qc_lookup( self, statement: str, params: "tuple[Any, ...] | list[Any]" ) -> "SQLResult | None": - if not self._fast_path_enabled: + if not self._qc_enabled: return None if self.statement_config.parameter_config.needs_static_script_compilation: return None - cached = self._query_cache.get(statement) + cached = self._qc.get(statement) if cached is None: return None if cached.param_count != len(params): @@ -1017,20 +1017,20 @@ def _try_cached_compiled( if isinstance(params, list) and params and isinstance(params[0], (tuple, list, dict)) and len(params) > 1: return None - rebound_params = self._fast_rebind(params, cached) + rebound_params = self.qc_rebind(params, cached) compiled_sql = cached.compiled_sql output_transformer = self.statement_config.output_transformer if output_transformer: compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) - fast_statement = self._build_fast_statement(statement, params, cached, rebound_params) - return cast("SQLResult", self._execute_compiled(fast_statement, compiled_sql, rebound_params)) + fast_statement = self.qc_build(statement, params, cached, rebound_params) + return cast("SQLResult", self.qc_execute(fast_statement, compiled_sql, rebound_params)) - def _execute_compiled(self, statement: "SQL", sql: str, params: Any) -> "SQLResult | Awaitable[SQLResult]": + def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult | Awaitable[SQLResult]": raise NotImplementedError - def _maybe_cache_fast_path(self, statement: "SQL") -> None: - if not self._fast_path_enabled: + def qc_store(self, statement: "SQL") -> None: + if not self._qc_enabled: return if statement.statement_config is not self.statement_config: return @@ -1059,7 +1059,7 @@ def _maybe_cache_fast_path(self, statement: "SQL") -> None: operation_profile=processed.operation_profile, param_count=param_profile.total_count, ) - self._query_cache.set(statement.raw_sql, cached) + self._qc.set(statement.raw_sql, cached) @overload @staticmethod @@ -1551,7 +1551,7 @@ def _get_compiled_statement( cached_statement = CachedStatement( compiled_sql=compiled_sql, parameters=prepared_parameters, expression=statement.expression ) - self._maybe_cache_fast_path(statement) + self.qc_store(statement) return cached_statement, prepared_parameters processed = statement.get_processed_state() @@ -1566,7 +1566,7 @@ def _get_compiled_statement( parameters=prepared_parameters, expression=processed.parsed_expression, ) - self._maybe_cache_fast_path(statement) + self.qc_store(statement) return cached_statement, prepared_parameters # Materialize iterators before cache key generation to prevent exhaustion. @@ -1605,7 +1605,7 @@ def _get_compiled_statement( parameters=prepared_parameters, expression=cached_result.expression, ) - self._maybe_cache_fast_path(statement) + self.qc_store(statement) return updated_cached, prepared_parameters # Compile the statement directly (no need for prepare_statement indirection) @@ -1623,7 +1623,7 @@ def _get_compiled_statement( if cache_key is not None and cache is not None: cache.put_statement(cache_key, cached_statement, dialect_key) - self._maybe_cache_fast_path(statement) + self.qc_store(statement) return cached_statement, prepared_parameters def _generate_compilation_cache_key( diff --git a/sqlspec/driver/_sync.py b/sqlspec/driver/_sync.py index 5bd72d7d..f59601a9 100644 --- a/sqlspec/driver/_sync.py +++ b/sqlspec/driver/_sync.py @@ -224,6 +224,8 @@ def dispatch_statement_execution(self, statement: "SQL", connection: "Any") -> " return result finally: self._release_pooled_statement(statement) + msg = "Execution failed to return a result." + raise RuntimeError(msg) @abstractmethod def dispatch_execute(self, cursor: Any, statement: "SQL") -> ExecutionResult: @@ -302,7 +304,7 @@ def dispatch_special_handling(self, cursor: Any, statement: "SQL") -> "SQLResult _ = (cursor, statement) return None - def _execute_raw(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": + def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": _ = (sql, params) exc_handler = self.handle_database_exceptions() try: @@ -372,14 +374,14 @@ def execute( ) -> "SQLResult": """Execute a statement with parameter handling.""" if ( - self._fast_path_enabled + self._qc_enabled and (statement_config is None or statement_config is self.statement_config) and isinstance(statement, str) and len(parameters) == 1 and isinstance(parameters[0], (tuple, list)) and not kwargs ): - fast_result = self._try_fast_execute(statement, parameters[0]) + fast_result = self.qc_lookup(statement, parameters[0]) if fast_result is not None: return fast_result sql_statement = self.prepare_statement( diff --git a/tests/unit/driver/test_fast_path.py b/tests/unit/driver/test_query_cache.py similarity index 83% rename from tests/unit/driver/test_fast_path.py rename to tests/unit/driver/test_query_cache.py index 7ff7e334..55b53cbe 100644 --- a/tests/unit/driver/test_fast_path.py +++ b/tests/unit/driver/test_query_cache.py @@ -16,11 +16,11 @@ class _FakeDriver(CommonDriverAttributesMixin): __slots__ = () - def _execute_compiled(self, statement: Any, sql: str, params: Any) -> Any: + def qc_execute(self, statement: Any, sql: str, params: Any) -> Any: return (statement, sql, params) -def test_query_cache_lru_eviction() -> None: +def test_qc_lru_eviction() -> None: cache = QueryCache(max_size=2) cache.set( @@ -40,7 +40,7 @@ def test_query_cache_lru_eviction() -> None: assert cache.get("c") is not None -def test_query_cache_update_moves_to_end() -> None: +def test_qc_update_moves_to_end() -> None: cache = QueryCache(max_size=2) cache.set( @@ -63,7 +63,7 @@ def test_query_cache_update_moves_to_end() -> None: assert entry.param_count == 2 -def test_try_cached_compiled_cache_hit_rebinds() -> None: +def testqc_lookup_cache_hit_rebinds() -> None: config = StatementConfig( parameter_config=ParameterStyleConfig( default_parameter_style=ParameterStyle.QMARK, supported_parameter_styles={ParameterStyle.QMARK} @@ -82,9 +82,9 @@ def test_try_cached_compiled_cache_hit_rebinds() -> None: operation_profile=OperationProfile(returns_rows=True, modifies_rows=False), param_count=1, ) - driver._query_cache.set("SELECT * FROM t WHERE id = ?", cached) + driver._qc.set("SELECT * FROM t WHERE id = ?", cached) - result = driver._try_cached_compiled("SELECT * FROM t WHERE id = ?", (1,)) + result = driver.qc_lookup("SELECT * FROM t WHERE id = ?", (1,)) assert result is not None statement, sql, params = cast("tuple[Any, str, Any]", result) @@ -112,7 +112,7 @@ def binder( return ("bound",) driver = _FakeDriver(object(), config, driver_features={"fast_path_binder": binder}) - driver._fast_path_enabled = True + driver._qc_enabled = True cached = CachedQuery( compiled_sql="SELECT * FROM t WHERE id = ?", @@ -124,9 +124,9 @@ def binder( operation_profile=OperationProfile(returns_rows=True, modifies_rows=False), param_count=1, ) - driver._query_cache.set("SELECT * FROM t WHERE id = ?", cached) + driver._qc.set("SELECT * FROM t WHERE id = ?", cached) - result = driver._try_cached_compiled("SELECT * FROM t WHERE id = ?", (1,)) + result = driver.qc_lookup("SELECT * FROM t WHERE id = ?", (1,)) assert result is not None _, _, params = cast("tuple[Any, str, Any]", result) @@ -141,8 +141,8 @@ def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: called["args"] = (statement, params) return sentinel - monkeypatch.setattr(mock_sync_driver, "_try_cached_compiled", _fake_try) - mock_sync_driver._fast_path_enabled = True + monkeypatch.setattr(mock_sync_driver, "qc_lookup", _fake_try) + mock_sync_driver._qc_enabled = True result = mock_sync_driver.execute("SELECT ?", (1,)) @@ -158,8 +158,8 @@ def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: called = True return object() - monkeypatch.setattr(mock_sync_driver, "_try_cached_compiled", _fake_try) - mock_sync_driver._fast_path_enabled = True + monkeypatch.setattr(mock_sync_driver, "qc_lookup", _fake_try) + mock_sync_driver._qc_enabled = True statement_config = mock_sync_driver.statement_config.replace() result = mock_sync_driver.execute("SELECT ?", (1,), statement_config=statement_config) @@ -169,13 +169,13 @@ def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: def test_execute_populates_fast_path_cache_on_normal_path(mock_sync_driver) -> None: - mock_sync_driver._fast_path_enabled = True + mock_sync_driver._qc_enabled = True - assert mock_sync_driver._query_cache.get("SELECT ?") is None + assert mock_sync_driver._qc.get("SELECT ?") is None result = mock_sync_driver.execute("SELECT ?", (1,)) - cached = mock_sync_driver._query_cache.get("SELECT ?") + cached = mock_sync_driver._qc.get("SELECT ?") assert cached is not None assert cached.param_count == 1 assert cached.operation_type == "SELECT" @@ -191,8 +191,8 @@ async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> obje called["args"] = (statement, params) return sentinel - monkeypatch.setattr(mock_async_driver, "_try_cached_compiled", _fake_try) - mock_async_driver._fast_path_enabled = True + monkeypatch.setattr(mock_async_driver, "qc_lookup", _fake_try) + mock_async_driver._qc_enabled = True result = await mock_async_driver.execute("SELECT ?", (1,)) @@ -209,8 +209,8 @@ async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> obje called = True return object() - monkeypatch.setattr(mock_async_driver, "_try_cached_compiled", _fake_try) - mock_async_driver._fast_path_enabled = True + monkeypatch.setattr(mock_async_driver, "qc_lookup", _fake_try) + mock_async_driver._qc_enabled = True statement_config = mock_async_driver.statement_config.replace() result = await mock_async_driver.execute("SELECT ?", (1,), statement_config=statement_config) @@ -221,20 +221,20 @@ async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> obje @pytest.mark.asyncio async def test_async_execute_populates_fast_path_cache_on_normal_path(mock_async_driver) -> None: - mock_async_driver._fast_path_enabled = True + mock_async_driver._qc_enabled = True - assert mock_async_driver._query_cache.get("SELECT ?") is None + assert mock_async_driver._qc.get("SELECT ?") is None result = await mock_async_driver.execute("SELECT ?", (1,)) - cached = mock_async_driver._query_cache.get("SELECT ?") + cached = mock_async_driver._qc.get("SELECT ?") assert cached is not None assert cached.param_count == 1 assert cached.operation_type == "SELECT" assert result.operation_type == "SELECT" -def test_query_cache_thread_safety() -> None: +def test_qc_thread_safety() -> None: cache = QueryCache(max_size=32) cached = CachedQuery("SQL", ParameterProfile.empty(), (), False, {}, "COMMAND", OperationProfile.empty(), 0) for idx in range(16): From 3833499636bd05f7903452fe5c889c1a5a83fdbf Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 21:40:01 +0000 Subject: [PATCH 53/66] refactor(driver): extract qc_prepare to consolidate sync/async duplication Move eligibility checks and preparation logic from qc_lookup into new qc_prepare method in _common.py. This eliminates ~15 lines of duplicated logic between sync and async implementations. Before: qc_lookup in both _common.py and _async.py contained identical eligibility checking, cache lookup, rebinding, and statement building. After: qc_prepare does all preparation work, qc_lookup becomes a thin wrapper that calls qc_prepare then qc_execute. Chapter 3 of driver-arch-cleanup_20260203 PRD. --- sqlspec/driver/_async.py | 29 +++++++++++------------------ sqlspec/driver/_common.py | 35 ++++++++++++++++++++++++++++++++--- 2 files changed, 43 insertions(+), 21 deletions(-) diff --git a/sqlspec/driver/_async.py b/sqlspec/driver/_async.py index b6a8f022..405f6edc 100644 --- a/sqlspec/driver/_async.py +++ b/sqlspec/driver/_async.py @@ -305,26 +305,19 @@ async def dispatch_special_handling(self, cursor: Any, statement: "SQL") -> "SQL async def qc_lookup( self, statement: str, params: "tuple[Any, ...] | list[Any]" ) -> "SQLResult | None": - if not self._qc_enabled: - return None - if self.statement_config.parameter_config.needs_static_script_compilation: - return None - cached = self._qc.get(statement) - if cached is None: - return None - if cached.param_count != len(params): - return None - if isinstance(params, list) and params and isinstance(params[0], (tuple, list, dict)) and len(params) > 1: - return None + """Attempt fast-path execution for cached query (async). - rebound_params = self.qc_rebind(params, cached) - compiled_sql = cached.compiled_sql - output_transformer = self.statement_config.output_transformer - if output_transformer: - compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) + Args: + statement: Raw SQL string. + params: Query parameters. - fast_statement = self.qc_build(statement, params, cached, rebound_params) - return await self.qc_execute(fast_statement, compiled_sql, rebound_params) + Returns: + SQLResult if cache hit and execution succeeds, None otherwise. + """ + prep = self.qc_prepare(statement, params) + if prep is None: + return None + return await self.qc_execute(*prep) async def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": _ = (sql, params) diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index 32014dda..b1040ad4 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -1002,13 +1002,24 @@ def qc_build( ) return statement - def qc_lookup( + def qc_prepare( self, statement: str, params: "tuple[Any, ...] | list[Any]" - ) -> "SQLResult | None": + ) -> "tuple[SQL, str, Any] | None": + """Prepare fast-path execution if cache hit. + + Args: + statement: Raw SQL string. + params: Query parameters (tuple or list). + + Returns: + Tuple of (SQL object, compiled SQL, bound params) if cache hit, + None if cache miss or ineligible. + """ if not self._qc_enabled: return None if self.statement_config.parameter_config.needs_static_script_compilation: return None + cached = self._qc.get(statement) if cached is None: return None @@ -1019,12 +1030,30 @@ def qc_lookup( rebound_params = self.qc_rebind(params, cached) compiled_sql = cached.compiled_sql + output_transformer = self.statement_config.output_transformer if output_transformer: compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) fast_statement = self.qc_build(statement, params, cached, rebound_params) - return cast("SQLResult", self.qc_execute(fast_statement, compiled_sql, rebound_params)) + return fast_statement, compiled_sql, rebound_params + + def qc_lookup( + self, statement: str, params: "tuple[Any, ...] | list[Any]" + ) -> "SQLResult | None": + """Attempt fast-path execution for cached query. + + Args: + statement: Raw SQL string. + params: Query parameters. + + Returns: + SQLResult if cache hit and execution succeeds, None otherwise. + """ + prep = self.qc_prepare(statement, params) + if prep is None: + return None + return cast("SQLResult", self.qc_execute(*prep)) def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult | Awaitable[SQLResult]": raise NotImplementedError From f344e918a726fa09f1ae82eba1d2167d2c83946d Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Tue, 3 Feb 2026 21:41:51 +0000 Subject: [PATCH 54/66] refactor(driver): simplify qc_prepare hot path to 2 checks Move eligibility validation from qc_prepare (hot lookup path) to qc_store (store path, executed once per unique query). Before: qc_prepare had 6 condition checks including needs_static_script_compilation and many-params guard. After: qc_prepare has only 2 essential checks: 1. _qc_enabled flag 2. cache lookup + param count match All detailed validation happens at store time, ensuring only valid queries enter the cache in the first place. Chapter 4 of driver-arch-cleanup_20260203 PRD. --- sqlspec/driver/_common.py | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index b1040ad4..ac09f759 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -1007,6 +1007,9 @@ def qc_prepare( ) -> "tuple[SQL, str, Any] | None": """Prepare fast-path execution if cache hit. + Only essential checks in the hot lookup path. All detailed eligibility + validation happens at store time in qc_store(). + Args: statement: Raw SQL string. params: Query parameters (tuple or list). @@ -1017,15 +1020,8 @@ def qc_prepare( """ if not self._qc_enabled: return None - if self.statement_config.parameter_config.needs_static_script_compilation: - return None - cached = self._qc.get(statement) - if cached is None: - return None - if cached.param_count != len(params): - return None - if isinstance(params, list) and params and isinstance(params[0], (tuple, list, dict)) and len(params) > 1: + if cached is None or cached.param_count != len(params): return None rebound_params = self.qc_rebind(params, cached) @@ -1059,6 +1055,20 @@ def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult | Aw raise NotImplementedError def qc_store(self, statement: "SQL") -> None: + """Store statement in cache if eligible. + + All eligibility validation happens here (executed once per unique query). + This keeps the hot lookup path (qc_prepare) minimal - just a flag check + and cache lookup. + + Ineligible queries: + - QC disabled or config mismatch + - Scripts or execute-many (multiple statements/param sets) + - Raw expressions (dynamic SQL) + - Static script compilation (parameters embedded in SQL) + - Filtered statements (dynamic WHERE clauses) + - Unprocessed statements (no compiled metadata) + """ if not self._qc_enabled: return if statement.statement_config is not self.statement_config: From e11d661d2a77f956524a6192128265554a2c37c3 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Wed, 4 Feb 2026 23:13:30 +0000 Subject: [PATCH 55/66] refactor(driver): remove adapter-specific qc_execute overrides The base class _qc_execute now handles the full fast-path execution: - Removed SqliteDriver.qc_execute (redundant with base class) - Removed AiosqliteDriver.qc_execute (redundant with base class) - Renamed qc_lookup -> _qc_lookup (internal API) - Added unreachable assertion to _qc_execute (all paths return/raise) - Fixed return type cast in execute() fast-path The `is_script`/`is_many` branches were dead code since _qc_store filters them out before caching. --- sqlspec/adapters/aiosqlite/driver.py | 61 --------------------------- sqlspec/adapters/sqlite/driver.py | 40 +----------------- sqlspec/driver/_async.py | 24 +++++------ sqlspec/driver/_common.py | 39 +++++++++-------- sqlspec/driver/_sync.py | 14 ++++-- tests/unit/driver/test_query_cache.py | 30 +++++++------ 6 files changed, 58 insertions(+), 150 deletions(-) diff --git a/sqlspec/adapters/aiosqlite/driver.py b/sqlspec/adapters/aiosqlite/driver.py index 9d14e482..b8ca7d04 100644 --- a/sqlspec/adapters/aiosqlite/driver.py +++ b/sqlspec/adapters/aiosqlite/driver.py @@ -119,67 +119,6 @@ def __init__( # CORE DISPATCH METHODS # ───────────────────────────────────────────────────────────────────────────── - async def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": - exc_handler = self.handle_database_exceptions() - cursor_manager = self.with_cursor(self.connection) - cursor: aiosqlite.Cursor | None = None - exc: Exception | None = None - exc_handler_entered = False - cursor_entered = False - result: SQLResult | None = None - - try: - await exc_handler.__aenter__() - exc_handler_entered = True - cursor = await cursor_manager.__aenter__() - cursor_entered = True - await cursor.execute(sql, normalize_execute_parameters(params)) - - if statement.returns_rows(): - fetched_data = await cursor.fetchall() - data, column_names, row_count = collect_rows(cast("list[Any]", fetched_data), cursor.description) - execution_result = self.create_execution_result( - cursor, - selected_data=data, - column_names=column_names, - data_row_count=row_count, - is_select_result=True, - ) - else: - affected_rows = resolve_rowcount(cursor) - execution_result = self.create_execution_result(cursor, rowcount_override=affected_rows) - - result = self.build_statement_result(statement, execution_result) - except Exception as err: - exc = err - finally: - if cursor_entered: - if exc is None: - await cursor_manager.__aexit__(None, None, None) - else: - await cursor_manager.__aexit__(type(exc), exc, exc.__traceback__) - if exc_handler_entered: - if exc is None: - await exc_handler.__aexit__(None, None, None) - else: - await exc_handler.__aexit__(type(exc), exc, exc.__traceback__) - - try: - if exc is not None: - mapped_exc = exc_handler.pending_exception or exc - if exc_handler.pending_exception is not None: - raise mapped_exc from exc - raise exc - - if exc_handler.pending_exception is not None: - mapped_exc = exc_handler.pending_exception - raise mapped_exc from None - - assert result is not None - return result - finally: - self._release_pooled_statement(statement) - async def dispatch_execute(self, cursor: "aiosqlite.Cursor", statement: "SQL") -> "ExecutionResult": """Execute single SQL statement.""" sql, prepared_parameters = self._get_compiled_sql(statement, self.statement_config) diff --git a/sqlspec/adapters/sqlite/driver.py b/sqlspec/adapters/sqlite/driver.py index 4c2e4b73..59ecec86 100644 --- a/sqlspec/adapters/sqlite/driver.py +++ b/sqlspec/adapters/sqlite/driver.py @@ -25,7 +25,7 @@ if TYPE_CHECKING: from sqlspec.adapters.sqlite._typing import SqliteConnection - from sqlspec.core import SQL, SQLResult, StatementConfig + from sqlspec.core import SQL, StatementConfig from sqlspec.driver import ExecutionResult from sqlspec.storage import StorageBridgeJob, StorageDestination, StorageFormat, StorageTelemetry @@ -134,41 +134,6 @@ def __init__( # CORE DISPATCH METHODS # ───────────────────────────────────────────────────────────────────────────── - def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": - exc_handler = self.handle_database_exceptions() - try: - try: - with exc_handler, self.with_cursor(self.connection) as cursor: - cursor.execute(sql, normalize_execute_parameters(params)) - - if statement.returns_rows(): - fetched_data = cursor.fetchall() - data, column_names, row_count = collect_rows(fetched_data, cursor.description) - - execution_result = self.create_execution_result( - cursor, - selected_data=data, - column_names=column_names, - data_row_count=row_count, - is_select_result=True, - ) - return self.build_statement_result(statement, execution_result) - - affected_rows = resolve_rowcount(cursor) - execution_result = self.create_execution_result(cursor, rowcount_override=affected_rows) - return self.build_statement_result(statement, execution_result) - except Exception as exc: - if exc_handler.pending_exception is not None: - raise exc_handler.pending_exception from exc - raise - finally: - if exc_handler.pending_exception is not None: - raise exc_handler.pending_exception from None - finally: - self._release_pooled_statement(statement) - msg = "Execution failed to return a result." - raise RuntimeError(msg) - def dispatch_execute(self, cursor: "sqlite3.Cursor", statement: "SQL") -> "ExecutionResult": """Execute single SQL statement. @@ -204,11 +169,8 @@ def dispatch_execute_many(self, cursor: "sqlite3.Cursor", statement: "SQL") -> " ExecutionResult with batch execution details """ sql, prepared_parameters = self._get_compiled_sql(statement, self.statement_config) - cursor.executemany(sql, normalize_execute_many_parameters(prepared_parameters)) - affected_rows = resolve_rowcount(cursor) - return self.create_execution_result(cursor, rowcount_override=affected_rows, is_many_result=True) def dispatch_execute_script(self, cursor: "sqlite3.Cursor", statement: "SQL") -> "ExecutionResult": diff --git a/sqlspec/driver/_async.py b/sqlspec/driver/_async.py index 405f6edc..a87cbd4e 100644 --- a/sqlspec/driver/_async.py +++ b/sqlspec/driver/_async.py @@ -302,7 +302,7 @@ async def dispatch_special_handling(self, cursor: Any, statement: "SQL") -> "SQL _ = (cursor, statement) return None - async def qc_lookup( + async def _qc_lookup( self, statement: str, params: "tuple[Any, ...] | list[Any]" ) -> "SQLResult | None": """Attempt fast-path execution for cached query (async). @@ -314,13 +314,17 @@ async def qc_lookup( Returns: SQLResult if cache hit and execution succeeds, None otherwise. """ - prep = self.qc_prepare(statement, params) - if prep is None: + prepared = self._qc_prepare(statement, params) + if prepared is None: return None - return await self.qc_execute(*prep) + return await self._qc_execute(prepared) - async def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": - _ = (sql, params) + async def _qc_execute(self, statement: "SQL") -> "SQLResult": + """Execute pre-compiled query via fast path (async). + + The statement is already compiled by _qc_prepare, so dispatch_execute + will hit the fast path in _get_compiled_statement (is_processed check). + """ exc_handler = self.handle_database_exceptions() cursor_manager = self.with_cursor(self.connection) cursor: Any | None = None @@ -337,12 +341,6 @@ async def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResul special_result = await self.dispatch_special_handling(cursor, statement) if special_result is not None: result = special_result - elif statement.is_script: - execution_result = await self.dispatch_execute_script(cursor, statement) - result = self.build_statement_result(statement, execution_result) - elif statement.is_many: - execution_result = await self.dispatch_execute_many(cursor, statement) - result = self.build_statement_result(statement, execution_result) else: execution_result = await self.dispatch_execute(cursor, statement) result = self.build_statement_result(statement, execution_result) @@ -432,7 +430,7 @@ async def execute( and isinstance(parameters[0], (tuple, list)) and not kwargs ): - fast_result = await self.qc_lookup(statement, parameters[0]) + fast_result = await self._qc_lookup(statement, parameters[0]) if fast_result is not None: return fast_result sql_statement = self.prepare_statement( diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index ac09f759..726a1c3c 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -963,7 +963,7 @@ def qc_rebind(self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQuery" apply_wrap_types=cached.applied_wrap_types, ) - def qc_build( + def _qc_build( self, sql: str, params: "tuple[Any, ...] | list[Any]", @@ -1002,21 +1002,20 @@ def qc_build( ) return statement - def qc_prepare( + def _qc_prepare( self, statement: str, params: "tuple[Any, ...] | list[Any]" - ) -> "tuple[SQL, str, Any] | None": + ) -> "SQL | None": """Prepare fast-path execution if cache hit. Only essential checks in the hot lookup path. All detailed eligibility - validation happens at store time in qc_store(). + validation happens at store time in _qc_store(). Args: statement: Raw SQL string. params: Query parameters (tuple or list). Returns: - Tuple of (SQL object, compiled SQL, bound params) if cache hit, - None if cache miss or ineligible. + Prepared SQL object with processed state if cache hit, None otherwise. """ if not self._qc_enabled: return None @@ -1031,12 +1030,11 @@ def qc_prepare( if output_transformer: compiled_sql, rebound_params = output_transformer(compiled_sql, rebound_params) - fast_statement = self.qc_build(statement, params, cached, rebound_params) - return fast_statement, compiled_sql, rebound_params + return self._qc_build(statement, params, cached, rebound_params) - def qc_lookup( + def _qc_lookup( self, statement: str, params: "tuple[Any, ...] | list[Any]" - ) -> "SQLResult | None": + ) -> "SQLResult | Awaitable[SQLResult | None] | None": """Attempt fast-path execution for cached query. Args: @@ -1044,17 +1042,18 @@ def qc_lookup( params: Query parameters. Returns: - SQLResult if cache hit and execution succeeds, None otherwise. + SQLResult (sync) or Awaitable[SQLResult | None] (async) if cache hit, + None if cache miss (sync only - async always returns Awaitable). """ - prep = self.qc_prepare(statement, params) - if prep is None: + prepared = self._qc_prepare(statement, params) + if prepared is None: return None - return cast("SQLResult", self.qc_execute(*prep)) + return self._qc_execute(prepared) - def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult | Awaitable[SQLResult]": + def _qc_execute(self, statement: "SQL") -> "SQLResult | Awaitable[SQLResult]": raise NotImplementedError - def qc_store(self, statement: "SQL") -> None: + def _qc_store(self, statement: "SQL") -> None: """Store statement in cache if eligible. All eligibility validation happens here (executed once per unique query). @@ -1590,7 +1589,7 @@ def _get_compiled_statement( cached_statement = CachedStatement( compiled_sql=compiled_sql, parameters=prepared_parameters, expression=statement.expression ) - self.qc_store(statement) + self._qc_store(statement) return cached_statement, prepared_parameters processed = statement.get_processed_state() @@ -1605,7 +1604,7 @@ def _get_compiled_statement( parameters=prepared_parameters, expression=processed.parsed_expression, ) - self.qc_store(statement) + self._qc_store(statement) return cached_statement, prepared_parameters # Materialize iterators before cache key generation to prevent exhaustion. @@ -1644,7 +1643,7 @@ def _get_compiled_statement( parameters=prepared_parameters, expression=cached_result.expression, ) - self.qc_store(statement) + self._qc_store(statement) return updated_cached, prepared_parameters # Compile the statement directly (no need for prepare_statement indirection) @@ -1662,7 +1661,7 @@ def _get_compiled_statement( if cache_key is not None and cache is not None: cache.put_statement(cache_key, cached_statement, dialect_key) - self.qc_store(statement) + self._qc_store(statement) return cached_statement, prepared_parameters def _generate_compilation_cache_key( diff --git a/sqlspec/driver/_sync.py b/sqlspec/driver/_sync.py index f59601a9..78eaa463 100644 --- a/sqlspec/driver/_sync.py +++ b/sqlspec/driver/_sync.py @@ -304,8 +304,12 @@ def dispatch_special_handling(self, cursor: Any, statement: "SQL") -> "SQLResult _ = (cursor, statement) return None - def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": - _ = (sql, params) + def _qc_execute(self, statement: "SQL") -> "SQLResult": + """Execute pre-compiled query via fast path. + + The statement is already compiled by _qc_prepare, so dispatch_execute + will hit the fast path in _get_compiled_statement (is_processed check). + """ exc_handler = self.handle_database_exceptions() try: try: @@ -324,6 +328,8 @@ def qc_execute(self, statement: "SQL", sql: str, params: Any) -> "SQLResult": raise exc_handler.pending_exception from None finally: self._release_pooled_statement(statement) + msg = "unreachable" + raise AssertionError(msg) # pragma: no cover - all paths return or raise # ───────────────────────────────────────────────────────────────────────────── # TRANSACTION MANAGEMENT - Required Abstract Methods @@ -381,9 +387,9 @@ def execute( and isinstance(parameters[0], (tuple, list)) and not kwargs ): - fast_result = self.qc_lookup(statement, parameters[0]) + fast_result = self._qc_lookup(statement, parameters[0]) if fast_result is not None: - return fast_result + return cast("SQLResult", fast_result) sql_statement = self.prepare_statement( statement, parameters, statement_config=statement_config or self.statement_config, kwargs=kwargs ) diff --git a/tests/unit/driver/test_query_cache.py b/tests/unit/driver/test_query_cache.py index 55b53cbe..7707e0e5 100644 --- a/tests/unit/driver/test_query_cache.py +++ b/tests/unit/driver/test_query_cache.py @@ -16,8 +16,8 @@ class _FakeDriver(CommonDriverAttributesMixin): __slots__ = () - def qc_execute(self, statement: Any, sql: str, params: Any) -> Any: - return (statement, sql, params) + def _qc_execute(self, statement: Any) -> Any: + return statement def test_qc_lru_eviction() -> None: @@ -63,7 +63,7 @@ def test_qc_update_moves_to_end() -> None: assert entry.param_count == 2 -def testqc_lookup_cache_hit_rebinds() -> None: +def test_qc_lookup_cache_hit_rebinds() -> None: config = StatementConfig( parameter_config=ParameterStyleConfig( default_parameter_style=ParameterStyle.QMARK, supported_parameter_styles={ParameterStyle.QMARK} @@ -84,13 +84,15 @@ def testqc_lookup_cache_hit_rebinds() -> None: ) driver._qc.set("SELECT * FROM t WHERE id = ?", cached) - result = driver.qc_lookup("SELECT * FROM t WHERE id = ?", (1,)) + result = driver._qc_lookup("SELECT * FROM t WHERE id = ?", (1,)) assert result is not None - statement, sql, params = cast("tuple[Any, str, Any]", result) - assert sql == "SELECT * FROM t WHERE id = ?" - assert params == (1,) + # Result is the SQL statement with processed state + statement = cast("Any", result) assert statement.operation_type == "SELECT" + compiled_sql, params = statement.compile() + assert compiled_sql == "SELECT * FROM t WHERE id = ?" + assert params == (1,) def test_cached_compiled_binder_override() -> None: @@ -126,10 +128,12 @@ def binder( ) driver._qc.set("SELECT * FROM t WHERE id = ?", cached) - result = driver.qc_lookup("SELECT * FROM t WHERE id = ?", (1,)) + result = driver._qc_lookup("SELECT * FROM t WHERE id = ?", (1,)) assert result is not None - _, _, params = cast("tuple[Any, str, Any]", result) + # Result is the SQL statement - check compiled params use custom binder + statement = cast("Any", result) + _, params = statement.compile() assert params == ("bound",) @@ -141,7 +145,7 @@ def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: called["args"] = (statement, params) return sentinel - monkeypatch.setattr(mock_sync_driver, "qc_lookup", _fake_try) + monkeypatch.setattr(mock_sync_driver, "_qc_lookup", _fake_try) mock_sync_driver._qc_enabled = True result = mock_sync_driver.execute("SELECT ?", (1,)) @@ -158,7 +162,7 @@ def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> object: called = True return object() - monkeypatch.setattr(mock_sync_driver, "qc_lookup", _fake_try) + monkeypatch.setattr(mock_sync_driver, "_qc_lookup", _fake_try) mock_sync_driver._qc_enabled = True statement_config = mock_sync_driver.statement_config.replace() @@ -191,7 +195,7 @@ async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> obje called["args"] = (statement, params) return sentinel - monkeypatch.setattr(mock_async_driver, "qc_lookup", _fake_try) + monkeypatch.setattr(mock_async_driver, "_qc_lookup", _fake_try) mock_async_driver._qc_enabled = True result = await mock_async_driver.execute("SELECT ?", (1,)) @@ -209,7 +213,7 @@ async def _fake_try(statement: str, params: tuple[Any, ...] | list[Any]) -> obje called = True return object() - monkeypatch.setattr(mock_async_driver, "qc_lookup", _fake_try) + monkeypatch.setattr(mock_async_driver, "_qc_lookup", _fake_try) mock_async_driver._qc_enabled = True statement_config = mock_async_driver.statement_config.replace() From 948e704266939ec5dff069482c0e8b4df29cf694 Mon Sep 17 00:00:00 2001 From: euri10 Date: Wed, 4 Feb 2026 23:13:42 +0000 Subject: [PATCH 56/66] feat(bench): add benchmark CLI for performance testing Add comprehensive benchmark tooling originally contributed by euri10 in PR #354, with enhancements for testing query cache effectiveness. Scenarios: - initialization: Connection and table setup overhead - write_heavy: Bulk insert performance (execute_many) - read_heavy: Bulk read with fetchall - repeated_queries: Single-row queries with varying params (tests _qc_*) Compares: raw driver vs sqlspec vs SQLAlchemy Drivers: sqlite (asyncpg requires PostgreSQL server) Usage: uv run python scripts/bench.py --driver sqlite --rows 10000 Co-authored-by: euri10 --- scripts/__init__.py | 0 scripts/bench.py | 520 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 520 insertions(+) create mode 100644 scripts/__init__.py create mode 100644 scripts/bench.py diff --git a/scripts/__init__.py b/scripts/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/scripts/bench.py b/scripts/bench.py new file mode 100644 index 00000000..abe96aff --- /dev/null +++ b/scripts/bench.py @@ -0,0 +1,520 @@ +"""Benchmark script for comparing sqlspec vs raw drivers vs SQLAlchemy. + +Originally contributed by euri10 (Benoit Barthelet) in PR #354. +""" + +from __future__ import annotations + +import asyncio +import inspect +import sqlite3 +import tempfile +import time +from typing import TYPE_CHECKING, Any + +import click +from rich.console import Console +from rich.table import Table + +from sqlspec import SQLSpec +from sqlspec.adapters.sqlite import SqliteConfig + +if TYPE_CHECKING: + from collections.abc import Sequence + + +ROWS_TO_INSERT = 10_000 + + +@click.command() +@click.option( + "--driver", + multiple=True, + default=["sqlite"], + show_default=True, + help="List of driver names to benchmark (default: sqlite)", +) +@click.option( + "--rows", default=ROWS_TO_INSERT, show_default=True, help="Number of rows to insert/read in heavy scenarios" +) +def main(driver: tuple[str, ...], rows: int) -> None: + """Run benchmarks for the specified drivers. + + Compares raw driver, sqlspec, and SQLAlchemy performance across + initialization, write-heavy, and read-heavy scenarios. + """ + global ROWS_TO_INSERT + ROWS_TO_INSERT = rows + + results: list[dict[str, Any]] = [] + errors: list[str] = [] + for drv in driver: + click.echo(f"Running benchmark for driver: {drv} (rows={rows})") + results.extend(run_benchmark(drv, errors)) + if results: + print_benchmark_table(results) + else: + click.echo("No benchmark results to display.") + if errors: + for err in errors: + click.secho(f"Error: {err}", fg="red") + click.echo(f"Benchmarks complete for drivers: {', '.join(driver)}") + + +def run_benchmark(driver: str, errors: list[str]) -> list[dict[str, Any]]: + """Run all benchmark scenarios for a driver. + + Args: + driver: The database driver name (e.g., "sqlite", "asyncpg") + errors: List to append error messages to + + Returns: + List of benchmark result dictionaries + """ + libraries = ["raw", "sqlspec", "sqlalchemy"] + scenarios = ["initialization", "write_heavy", "read_heavy", "iterative_inserts", "repeated_queries"] + results: list[dict[str, Any]] = [] + + for scenario in scenarios: + for lib in libraries: + func = SCENARIO_REGISTRY.get((lib, driver, scenario)) + if func is None: + errors.append(f"No implementation for library={lib}, driver={driver}, scenario={scenario}") + continue + + try: + start = time.perf_counter() + if inspect.iscoroutinefunction(func): + asyncio.run(func()) + else: + func() + elapsed = time.perf_counter() - start + + results.append({"driver": driver, "library": lib, "scenario": scenario, "time": elapsed}) + except Exception as exc: + errors.append(f"{lib}/{driver}/{scenario}: {exc}") + + return results + + +# --- Scenario helpers and registry --- +# SQLite implementations +# ------------------------------ + +CREATE_TEST_TABLE = "CREATE TABLE test (value TEXT);" +DROP_TEST_TABLE = "DROP TABLE IF EXISTS test;" +INSERT_TEST_VALUE = "INSERT INTO test (value) VALUES (?);" +INSERT_TEST_VALUE_ASYNCPG = "INSERT INTO test (value) VALUES ($1);" +SELECT_TEST_VALUES = "SELECT * FROM test;" +INSERT_TEST_VALUE_SQLA = "INSERT INTO test (value) VALUES (:value);" + + +def raw_sqlite_initialization() -> None: + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + conn = sqlite3.connect(tmp.name) + conn.execute(CREATE_TEST_TABLE) + conn.close() + + +def raw_sqlite_write_heavy() -> None: + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + conn = sqlite3.connect(tmp.name) + conn.execute(CREATE_TEST_TABLE) + # Use executemany for fair comparison + data = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + conn.executemany(INSERT_TEST_VALUE, data) + conn.commit() + conn.close() + + +def raw_sqlite_read_heavy() -> None: + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + conn = sqlite3.connect(tmp.name) + conn.execute(CREATE_TEST_TABLE) + data = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + conn.executemany(INSERT_TEST_VALUE, data) + conn.commit() + cursor = conn.execute(SELECT_TEST_VALUES) + rows = cursor.fetchall() + assert len(rows) == ROWS_TO_INSERT + conn.close() + + +def sqlspec_sqlite_initialization() -> None: + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + spec = SQLSpec() + config = SqliteConfig(database=tmp.name) + with spec.provide_session(config) as session: + session.execute(CREATE_TEST_TABLE) + + +def sqlspec_sqlite_write_heavy() -> None: + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + spec = SQLSpec() + config = SqliteConfig(database=tmp.name) + with spec.provide_session(config) as session: + session.execute(CREATE_TEST_TABLE) + # Use execute_many for bulk inserts + data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + session.execute_many(INSERT_TEST_VALUE, data) + + +def sqlspec_sqlite_read_heavy() -> None: + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + spec = SQLSpec() + config = SqliteConfig(database=tmp.name) + with spec.provide_session(config) as session: + session.execute(CREATE_TEST_TABLE) + data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + session.execute_many(INSERT_TEST_VALUE, data) + rows = session.fetch(SELECT_TEST_VALUES) + assert len(rows) == ROWS_TO_INSERT + + +def _get_sqlalchemy() -> tuple[Any, Any]: + """Import SQLAlchemy lazily.""" + try: + from sqlalchemy import create_engine, text + except ImportError: + return None, None + else: + return create_engine, text + + +def sqlalchemy_sqlite_initialization() -> None: + create_engine, text = _get_sqlalchemy() + if create_engine is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + engine = create_engine(f"sqlite:///{tmp.name}") + with engine.connect() as conn: + conn.execute(text(CREATE_TEST_TABLE)) + conn.commit() + + +def sqlalchemy_sqlite_write_heavy() -> None: + create_engine, text = _get_sqlalchemy() + if create_engine is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + engine = create_engine(f"sqlite:///{tmp.name}") + with engine.connect() as conn: + conn.execute(text(CREATE_TEST_TABLE)) + # Use insert with bindparams for fair bulk comparison + data = [{"value": f"value_{i}"} for i in range(ROWS_TO_INSERT)] + conn.execute(text(INSERT_TEST_VALUE_SQLA), data) + conn.commit() + + +def sqlalchemy_sqlite_read_heavy() -> None: + create_engine, text = _get_sqlalchemy() + if create_engine is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + engine = create_engine(f"sqlite:///{tmp.name}") + with engine.connect() as conn: + conn.execute(text(CREATE_TEST_TABLE)) + data = [{"value": f"value_{i}"} for i in range(ROWS_TO_INSERT)] + conn.execute(text(INSERT_TEST_VALUE_SQLA), data) + conn.commit() + result = conn.execute(text(SELECT_TEST_VALUES)) + rows = result.fetchall() + assert len(rows) == ROWS_TO_INSERT + + +# Iterative insert scenarios - tests per-call overhead +# This is what euri10's original benchmark measured for sqlspec +# but not for raw/sqlalchemy (which used executemany) + + +def raw_sqlite_iterative_inserts() -> None: + """Individual inserts in a loop - shows per-call overhead.""" + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + conn = sqlite3.connect(tmp.name) + conn.execute(CREATE_TEST_TABLE) + for i in range(ROWS_TO_INSERT): + conn.execute(INSERT_TEST_VALUE, (f"value_{i}",)) + conn.commit() + conn.close() + + +def sqlspec_sqlite_iterative_inserts() -> None: + """Individual inserts in a loop - shows per-call overhead.""" + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + spec = SQLSpec() + config = SqliteConfig(database=tmp.name) + with spec.provide_session(config) as session: + session.execute(CREATE_TEST_TABLE) + for i in range(ROWS_TO_INSERT): + session.execute(INSERT_TEST_VALUE, (f"value_{i}",)) + + +def sqlalchemy_sqlite_iterative_inserts() -> None: + """Individual inserts in a loop - shows per-call overhead.""" + create_engine, text = _get_sqlalchemy() + if create_engine is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + engine = create_engine(f"sqlite:///{tmp.name}") + with engine.connect() as conn: + conn.execute(text(CREATE_TEST_TABLE)) + for i in range(ROWS_TO_INSERT): + conn.execute(text(INSERT_TEST_VALUE_SQLA), {"value": f"value_{i}"}) + conn.commit() + + +# Query cache scenarios - tests repeated single-row operations +# These stress the query preparation/caching path +SELECT_BY_VALUE = "SELECT * FROM test WHERE value = ?;" +SELECT_BY_VALUE_SQLA = "SELECT * FROM test WHERE value = :value;" + + +def raw_sqlite_repeated_queries() -> None: + """Repeated single-row queries - tests query preparation overhead.""" + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + conn = sqlite3.connect(tmp.name) + conn.execute(CREATE_TEST_TABLE) + data = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + conn.executemany(INSERT_TEST_VALUE, data) + conn.commit() + # Query same rows repeatedly with different params + for i in range(ROWS_TO_INSERT): + cursor = conn.execute(SELECT_BY_VALUE, (f"value_{i % 100}",)) + cursor.fetchone() + conn.close() + + +def sqlspec_sqlite_repeated_queries() -> None: + """Repeated single-row queries - tests query cache effectiveness.""" + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + spec = SQLSpec() + config = SqliteConfig(database=tmp.name) + with spec.provide_session(config) as session: + session.execute(CREATE_TEST_TABLE) + data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + session.execute_many(INSERT_TEST_VALUE, data) + # Query same rows repeatedly with different params + # This should hit the query cache after the first few iterations + for i in range(ROWS_TO_INSERT): + session.fetch_one_or_none(SELECT_BY_VALUE, (f"value_{i % 100}",)) + + +def sqlalchemy_sqlite_repeated_queries() -> None: + """Repeated single-row queries.""" + create_engine, text = _get_sqlalchemy() + if create_engine is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + engine = create_engine(f"sqlite:///{tmp.name}") + with engine.connect() as conn: + conn.execute(text(CREATE_TEST_TABLE)) + data = [{"value": f"value_{i}"} for i in range(ROWS_TO_INSERT)] + conn.execute(text(INSERT_TEST_VALUE_SQLA), data) + conn.commit() + # Query same rows repeatedly with different params + for i in range(ROWS_TO_INSERT): + result = conn.execute(text(SELECT_BY_VALUE_SQLA), {"value": f"value_{i % 100}"}) + result.fetchone() + + +# Asyncpg implementations +# These require asyncpg and optionally SQLAlchemy[asyncio] to be installed + +ASYNCPG_DSN = "postgresql://postgres:postgres@localhost/postgres" + + +def _get_asyncpg() -> Any: + """Import asyncpg lazily.""" + try: + from asyncpg import connect + except ImportError: + return None + else: + return connect + + +def _get_asyncpg_config() -> Any: + """Import AsyncpgConfig lazily.""" + try: + from sqlspec.adapters.asyncpg import AsyncpgConfig + except ImportError: + return None + else: + return AsyncpgConfig + + +def _get_async_sqlalchemy() -> tuple[Any, Any]: + """Import async SQLAlchemy lazily.""" + try: + from sqlalchemy import text + from sqlalchemy.ext.asyncio import create_async_engine + except ImportError: + return None, None + else: + return create_async_engine, text + + +async def raw_asyncpg_initialization() -> None: + connect = _get_asyncpg() + if connect is None: + return + conn = await connect(dsn=ASYNCPG_DSN) + await conn.execute(DROP_TEST_TABLE) + await conn.execute(CREATE_TEST_TABLE) + await conn.close() + + +async def raw_asyncpg_write_heavy() -> None: + connect = _get_asyncpg() + if connect is None: + return + conn = await connect(dsn=ASYNCPG_DSN) + await conn.execute(DROP_TEST_TABLE) + await conn.execute(CREATE_TEST_TABLE) + # Use executemany for fair comparison + data = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + await conn.executemany(INSERT_TEST_VALUE_ASYNCPG, data) + await conn.close() + + +async def raw_asyncpg_read_heavy() -> None: + connect = _get_asyncpg() + if connect is None: + return + conn = await connect(dsn=ASYNCPG_DSN) + rows = await conn.fetch(SELECT_TEST_VALUES) + assert len(rows) == ROWS_TO_INSERT + await conn.close() + + +async def sqlspec_asyncpg_initialization() -> None: + AsyncpgConfig = _get_asyncpg_config() # noqa: N806 + if AsyncpgConfig is None: + return + spec = SQLSpec() + config = AsyncpgConfig(connection_config={"dsn": ASYNCPG_DSN}) + async with spec.provide_session(config) as session: + await session.execute(DROP_TEST_TABLE) + await session.execute(CREATE_TEST_TABLE) + + +async def sqlspec_asyncpg_write_heavy() -> None: + AsyncpgConfig = _get_asyncpg_config() # noqa: N806 + if AsyncpgConfig is None: + return + spec = SQLSpec() + config = AsyncpgConfig(connection_config={"dsn": ASYNCPG_DSN}) + async with spec.provide_session(config) as session: + await session.execute(DROP_TEST_TABLE) + await session.execute(CREATE_TEST_TABLE) + data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + await session.execute_many(INSERT_TEST_VALUE_ASYNCPG, data) + + +async def sqlspec_asyncpg_read_heavy() -> None: + AsyncpgConfig = _get_asyncpg_config() # noqa: N806 + if AsyncpgConfig is None: + return + spec = SQLSpec() + config = AsyncpgConfig(connection_config={"dsn": ASYNCPG_DSN}) + async with spec.provide_session(config) as session: + rows = await session.fetch(SELECT_TEST_VALUES) + assert len(rows) == ROWS_TO_INSERT + + +async def sqlalchemy_asyncpg_initialization() -> None: + create_async_engine, text = _get_async_sqlalchemy() + if create_async_engine is None: + return + engine = create_async_engine(f"postgresql+asyncpg://{ASYNCPG_DSN.split('://')[1]}") + async with engine.connect() as conn: + await conn.execute(text(DROP_TEST_TABLE)) + await conn.execute(text(CREATE_TEST_TABLE)) + await conn.commit() + + +async def sqlalchemy_asyncpg_write_heavy() -> None: + create_async_engine, text = _get_async_sqlalchemy() + if create_async_engine is None: + return + engine = create_async_engine(f"postgresql+asyncpg://{ASYNCPG_DSN.split('://')[1]}") + async with engine.connect() as conn: + await conn.execute(text(DROP_TEST_TABLE)) + await conn.execute(text(CREATE_TEST_TABLE)) + data = [{"value": f"value_{i}"} for i in range(ROWS_TO_INSERT)] + await conn.execute(text(INSERT_TEST_VALUE_SQLA), data) + await conn.commit() + + +async def sqlalchemy_asyncpg_read_heavy() -> None: + create_async_engine, text = _get_async_sqlalchemy() + if create_async_engine is None: + return + engine = create_async_engine(f"postgresql+asyncpg://{ASYNCPG_DSN.split('://')[1]}") + async with engine.begin() as conn: + result = await conn.execute(text(SELECT_TEST_VALUES)) + rows = result.fetchall() + assert len(rows) == ROWS_TO_INSERT + + +SCENARIO_REGISTRY: dict[tuple[str, str, str], Any] = { + # SQLite scenarios + ("raw", "sqlite", "initialization"): raw_sqlite_initialization, + ("raw", "sqlite", "write_heavy"): raw_sqlite_write_heavy, + ("raw", "sqlite", "read_heavy"): raw_sqlite_read_heavy, + ("raw", "sqlite", "iterative_inserts"): raw_sqlite_iterative_inserts, + ("raw", "sqlite", "repeated_queries"): raw_sqlite_repeated_queries, + ("sqlspec", "sqlite", "initialization"): sqlspec_sqlite_initialization, + ("sqlspec", "sqlite", "write_heavy"): sqlspec_sqlite_write_heavy, + ("sqlspec", "sqlite", "read_heavy"): sqlspec_sqlite_read_heavy, + ("sqlspec", "sqlite", "iterative_inserts"): sqlspec_sqlite_iterative_inserts, + ("sqlspec", "sqlite", "repeated_queries"): sqlspec_sqlite_repeated_queries, + ("sqlalchemy", "sqlite", "initialization"): sqlalchemy_sqlite_initialization, + ("sqlalchemy", "sqlite", "write_heavy"): sqlalchemy_sqlite_write_heavy, + ("sqlalchemy", "sqlite", "read_heavy"): sqlalchemy_sqlite_read_heavy, + ("sqlalchemy", "sqlite", "iterative_inserts"): sqlalchemy_sqlite_iterative_inserts, + ("sqlalchemy", "sqlite", "repeated_queries"): sqlalchemy_sqlite_repeated_queries, + # Asyncpg scenarios + ("raw", "asyncpg", "initialization"): raw_asyncpg_initialization, + ("raw", "asyncpg", "write_heavy"): raw_asyncpg_write_heavy, + ("raw", "asyncpg", "read_heavy"): raw_asyncpg_read_heavy, + ("sqlspec", "asyncpg", "initialization"): sqlspec_asyncpg_initialization, + ("sqlspec", "asyncpg", "write_heavy"): sqlspec_asyncpg_write_heavy, + ("sqlspec", "asyncpg", "read_heavy"): sqlspec_asyncpg_read_heavy, + ("sqlalchemy", "asyncpg", "initialization"): sqlalchemy_asyncpg_initialization, + ("sqlalchemy", "asyncpg", "write_heavy"): sqlalchemy_asyncpg_write_heavy, + ("sqlalchemy", "asyncpg", "read_heavy"): sqlalchemy_asyncpg_read_heavy, +} + + +def print_benchmark_table(results: list[dict[str, Any]]) -> None: + console = Console() + table = Table(title="Benchmark Results") + table.add_column("Driver", style="cyan", no_wrap=True) + table.add_column("Library", style="magenta") + table.add_column("Scenario", style="green") + table.add_column("Time (s)", justify="right", style="yellow") + table.add_column("% Slower vs Raw", justify="right", style="red") + + # Build a lookup for raw times: {(driver, scenario): time} + raw_times = {} + for row in results: + if row["library"] == "raw": + raw_times[(row["driver"], row["scenario"])] = row["time"] + + for row in results: + driver = row["driver"] + scenario = row["scenario"] + lib = row["library"] + t = row["time"] + if lib == "raw": + percent_slower = "—" + else: + raw_time = raw_times.get((driver, scenario)) + percent_slower = f"{100 * (t - raw_time) / raw_time:.1f}%" if raw_time and raw_time > 0 else "n/a" + table.add_row(driver, lib, scenario, f"{t:.4f}", percent_slower) + console.print(table) + + +if __name__ == "__main__": + main() From 767c7c930e293666497a8554e5b198a462d463d6 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Wed, 4 Feb 2026 23:29:59 +0000 Subject: [PATCH 57/66] refactor(driver): streamline method signatures for consistency --- scripts/bench.py | 2 ++ sqlspec/adapters/aiosqlite/driver.py | 2 +- sqlspec/driver/_async.py | 4 +--- sqlspec/driver/_common.py | 4 +--- 4 files changed, 5 insertions(+), 7 deletions(-) diff --git a/scripts/bench.py b/scripts/bench.py index abe96aff..b2023f9f 100644 --- a/scripts/bench.py +++ b/scripts/bench.py @@ -22,6 +22,8 @@ if TYPE_CHECKING: from collections.abc import Sequence +__all__ = ("main", "print_benchmark_table", "raw_asyncpg_initialization", "raw_asyncpg_read_heavy", "raw_asyncpg_write_heavy", "raw_sqlite_initialization", "raw_sqlite_iterative_inserts", "raw_sqlite_read_heavy", "raw_sqlite_repeated_queries", "raw_sqlite_write_heavy", "run_benchmark", "sqlalchemy_asyncpg_initialization", "sqlalchemy_asyncpg_read_heavy", "sqlalchemy_asyncpg_write_heavy", "sqlalchemy_sqlite_initialization", "sqlalchemy_sqlite_iterative_inserts", "sqlalchemy_sqlite_read_heavy", "sqlalchemy_sqlite_repeated_queries", "sqlalchemy_sqlite_write_heavy", "sqlspec_asyncpg_initialization", "sqlspec_asyncpg_read_heavy", "sqlspec_asyncpg_write_heavy", "sqlspec_sqlite_initialization", "sqlspec_sqlite_iterative_inserts", "sqlspec_sqlite_read_heavy", "sqlspec_sqlite_repeated_queries", "sqlspec_sqlite_write_heavy", ) + ROWS_TO_INSERT = 10_000 diff --git a/sqlspec/adapters/aiosqlite/driver.py b/sqlspec/adapters/aiosqlite/driver.py index b8ca7d04..57db1b60 100644 --- a/sqlspec/adapters/aiosqlite/driver.py +++ b/sqlspec/adapters/aiosqlite/driver.py @@ -26,7 +26,7 @@ if TYPE_CHECKING: from sqlspec.adapters.aiosqlite._typing import AiosqliteConnection - from sqlspec.core import SQL, SQLResult, StatementConfig + from sqlspec.core import SQL, StatementConfig from sqlspec.driver import ExecutionResult from sqlspec.storage import StorageBridgeJob, StorageDestination, StorageFormat, StorageTelemetry diff --git a/sqlspec/driver/_async.py b/sqlspec/driver/_async.py index a87cbd4e..3c25e2bb 100644 --- a/sqlspec/driver/_async.py +++ b/sqlspec/driver/_async.py @@ -302,9 +302,7 @@ async def dispatch_special_handling(self, cursor: Any, statement: "SQL") -> "SQL _ = (cursor, statement) return None - async def _qc_lookup( - self, statement: str, params: "tuple[Any, ...] | list[Any]" - ) -> "SQLResult | None": + async def _qc_lookup(self, statement: str, params: "tuple[Any, ...] | list[Any]") -> "SQLResult | None": """Attempt fast-path execution for cached query (async). Args: diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index 726a1c3c..d07e6d5e 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -1002,9 +1002,7 @@ def _qc_build( ) return statement - def _qc_prepare( - self, statement: str, params: "tuple[Any, ...] | list[Any]" - ) -> "SQL | None": + def _qc_prepare(self, statement: str, params: "tuple[Any, ...] | list[Any]") -> "SQL | None": """Prepare fast-path execution if cache hit. Only essential checks in the hot lookup path. All detailed eligibility From fd6d89cd5b9a1bb9d3b202288a728e029905eb9f Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Wed, 4 Feb 2026 23:31:56 +0000 Subject: [PATCH 58/66] fix(types): suppress pyright errors in query cache fast-path --- sqlspec/driver/_common.py | 36 ++++++++++++++++++++---------------- 1 file changed, 20 insertions(+), 16 deletions(-) diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index d07e6d5e..fa010281 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -847,7 +847,9 @@ def __init__( ) = None binder = self.driver_features.get("fast_path_binder") if binder is not None and callable(binder): - self._qc_binder = binder + self._qc_binder = cast( + "Callable[[Any, ParameterProfile, Any, tuple[str, ...], bool, bool], ConvertedParameters]", binder + ) self._update_qc_flag() def attach_observability(self, runtime: "ObservabilityRuntime") -> None: @@ -971,21 +973,23 @@ def _qc_build( execution_parameters: "ConvertedParameters", ) -> "SQL": statement = get_sql_pool().acquire() - statement._raw_sql = sql - statement._raw_expression = None - statement._statement_config = self.statement_config - statement._dialect = statement._normalize_dialect(self.statement_config.dialect) - statement._is_many = False - statement._is_script = False - statement._original_parameters = () - statement._pooled = True - statement._compiled_from_cache = False - statement._hash = None - statement._filters = [] - statement._named_parameters = {} - statement._positional_parameters = list(params) - statement._sql_param_counters = {} - statement._processed_state = statement._build_processed_state( + # Fast-path: directly set internal attributes to avoid constructor overhead + # pyright: ignore[reportPrivateUsage] + statement._raw_sql = sql # pyright: ignore[reportPrivateUsage] + statement._raw_expression = None # pyright: ignore[reportPrivateUsage] + statement._statement_config = self.statement_config # pyright: ignore[reportPrivateUsage] + statement._dialect = statement._normalize_dialect(self.statement_config.dialect) # pyright: ignore[reportPrivateUsage] + statement._is_many = False # pyright: ignore[reportPrivateUsage] + statement._is_script = False # pyright: ignore[reportPrivateUsage] + statement._original_parameters = () # pyright: ignore[reportPrivateUsage] + statement._pooled = True # pyright: ignore[reportPrivateUsage] + statement._compiled_from_cache = False # pyright: ignore[reportPrivateUsage] + statement._hash = None # pyright: ignore[reportPrivateUsage] + statement._filters = [] # pyright: ignore[reportPrivateUsage] + statement._named_parameters = {} # pyright: ignore[reportPrivateUsage] + statement._positional_parameters = list(params) # pyright: ignore[reportPrivateUsage] + statement._sql_param_counters = {} # pyright: ignore[reportPrivateUsage] + statement._processed_state = statement._build_processed_state( # pyright: ignore[reportPrivateUsage] compiled_sql=cached.compiled_sql, execution_parameters=execution_parameters, parsed_expression=None, From 057ced824766d297057b5550c3a56fd0e71d6690 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Wed, 4 Feb 2026 23:42:29 +0000 Subject: [PATCH 59/66] chore: remove sqlspec_rs hooks and fix pyright errors - Remove SQLSPEC_RS_INSTALLED flag and get_sqlspec_rs() from _typing.py - Remove _configure_qc_binder() method and calls from config.py - Remove _qc_binder attribute and fast_path_binder handling from driver - Simplify qc_rebind() to use Python-only parameter binding - Fix anyio.to_thread.run_sync pyright errors in migrations - Fix _fast_path_enabled -> _qc_enabled rename in tests - Remove test_cached_compiled_binder_override test (tested removed feature) The query cache (_qc_*) optimizations remain fully functional - only the speculative Rust binder hook was removed until sqlspec_rs is ready. --- sqlspec/_typing.py | 16 --------- sqlspec/config.py | 20 ----------- sqlspec/driver/_common.py | 22 ++---------- sqlspec/migrations/commands.py | 4 +-- tests/unit/adapters/test_sync_adapters.py | 6 ++-- tests/unit/driver/test_query_cache.py | 42 ----------------------- 6 files changed, 7 insertions(+), 103 deletions(-) diff --git a/sqlspec/_typing.py b/sqlspec/_typing.py index 6e4a3658..79999158 100644 --- a/sqlspec/_typing.py +++ b/sqlspec/_typing.py @@ -617,21 +617,6 @@ def labels(self, *labelvalues: str, **labelkwargs: str) -> _MetricInstance: ALLOYDB_CONNECTOR_INSTALLED = dependency_flag("google.cloud.alloydb.connector") NANOID_INSTALLED = dependency_flag("fastnanoid") UUID_UTILS_INSTALLED = dependency_flag("uuid_utils") -SQLSPEC_RS_INSTALLED = dependency_flag("sqlspec_rs") - - -def get_sqlspec_rs() -> "Any | None": - """Return the sqlspec_rs module when available.""" - if not SQLSPEC_RS_INSTALLED: - return None - try: - import importlib - - return importlib.import_module("sqlspec_rs") - except ModuleNotFoundError: - return None - - __all__ = ( "ALLOYDB_CONNECTOR_INSTALLED", "ATTRS_INSTALLED", @@ -710,7 +695,6 @@ def get_sqlspec_rs() -> "Any | None": "cattrs_unstructure", "convert", "convert_stub", - "get_sqlspec_rs", "module_available", "trace", ) diff --git a/sqlspec/config.py b/sqlspec/config.py index 921b852e..5c23b9c7 100644 --- a/sqlspec/config.py +++ b/sqlspec/config.py @@ -8,7 +8,6 @@ from typing_extensions import NotRequired, TypedDict -from sqlspec._typing import SQLSPEC_RS_INSTALLED, get_sqlspec_rs from sqlspec.core import ParameterStyle, ParameterStyleConfig, StatementConfig from sqlspec.exceptions import MissingDependencyError from sqlspec.extensions.events import EventRuntimeHints @@ -881,21 +880,6 @@ def _configure_observability_extensions(self) -> None: if updated is not self.observability_config: self.observability_config = updated - def _configure_qc_binder(self) -> None: - """Attach sqlspec_rs fast-path binder when available.""" - - if "fast_path_binder" in self.driver_features: - return - if not SQLSPEC_RS_INSTALLED: - return - module = get_sqlspec_rs() - if module is None: - return - binder = getattr(module, "fast_path_bind", None) - if binder is None: - return - self.driver_features["fast_path_binder"] = binder - def _promote_driver_feature_hooks(self) -> None: lifecycle_hooks: dict[str, list[Callable[[dict[str, Any]], None]]] = {} @@ -1222,7 +1206,6 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} - self._configure_qc_binder() self._storage_capabilities = None self.driver_features.setdefault("storage_capabilities", self.storage_capabilities()) self._promote_driver_feature_hooks() @@ -1394,7 +1377,6 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} - self._configure_qc_binder() self._promote_driver_feature_hooks() self._configure_observability_extensions() @@ -1565,7 +1547,6 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} - self._configure_qc_binder() self._storage_capabilities = None self.driver_features.setdefault("storage_capabilities", self.storage_capabilities()) self._promote_driver_feature_hooks() @@ -1771,7 +1752,6 @@ def __init__( else: self.statement_config = statement_config self.driver_features = driver_features or {} - self._configure_qc_binder() self._storage_capabilities = None self.driver_features.setdefault("storage_capabilities", self.storage_capabilities()) self._promote_driver_feature_hooks() diff --git a/sqlspec/driver/_common.py b/sqlspec/driver/_common.py index fa010281..6afc8ba2 100644 --- a/sqlspec/driver/_common.py +++ b/sqlspec/driver/_common.py @@ -27,7 +27,7 @@ ) from sqlspec.core._pool import get_sql_pool from sqlspec.core.metrics import StackExecutionMetrics -from sqlspec.core.parameters import ParameterProcessor, ParameterProfile, structural_fingerprint, value_fingerprint +from sqlspec.core.parameters import ParameterProcessor, structural_fingerprint, value_fingerprint from sqlspec.data_dictionary._loader import get_data_dictionary_loader from sqlspec.data_dictionary._registry import get_dialect_config from sqlspec.driver._query_cache import QC_MAX_SIZE, CachedQuery, QueryCache @@ -808,7 +808,6 @@ class CommonDriverAttributesMixin: __slots__ = ( "_observability", "_qc", - "_qc_binder", "_qc_enabled", "_statement_cache", "connection", @@ -842,14 +841,6 @@ def __init__( self._statement_cache: dict[str, SQL] = {} self._qc = QueryCache(QC_MAX_SIZE) self._qc_enabled = False - self._qc_binder: ( - Callable[[Any, ParameterProfile, Any, tuple[str, ...], bool, bool], ConvertedParameters] | None - ) = None - binder = self.driver_features.get("fast_path_binder") - if binder is not None and callable(binder): - self._qc_binder = cast( - "Callable[[Any, ParameterProfile, Any, tuple[str, ...], bool, bool], ConvertedParameters]", binder - ) self._update_qc_flag() def attach_observability(self, runtime: "ObservabilityRuntime") -> None: @@ -937,16 +928,7 @@ def _release_pooled_statement(self, statement: "SQL") -> None: get_sql_pool().release(statement) def qc_rebind(self, params: "tuple[Any, ...] | list[Any]", cached: "CachedQuery") -> "ConvertedParameters": - binder = self._qc_binder - if binder is not None: - return binder( - params, - cached.parameter_profile, - self.statement_config.parameter_config, - cached.input_named_parameters, - False, - cached.applied_wrap_types, - ) + """Rebind parameters for a cached query.""" config = self.statement_config.parameter_config if not cached.input_named_parameters and not cached.applied_wrap_types and not config.type_coercion_map: return params diff --git a/sqlspec/migrations/commands.py b/sqlspec/migrations/commands.py index 1e18300e..d1a04ccf 100644 --- a/sqlspec/migrations/commands.py +++ b/sqlspec/migrations/commands.py @@ -1966,7 +1966,7 @@ async def squash( return if not yes: - response = await anyio.to_thread.run_sync(input, "\nProceed with squash? [y/N]: ") + response = await anyio.to_thread.run_sync(input, "\nProceed with squash? [y/N]: ") # pyright: ignore[reportAttributeAccessIssue] if response.lower() != "y": console.print("[yellow]Squash cancelled[/]") return @@ -2039,7 +2039,7 @@ async def fix(self, dry_run: bool = False, update_database: bool = True, yes: bo return if not yes: - response = await anyio.to_thread.run_sync(input, "\nProceed with conversion? [y/N]: ") + response = await anyio.to_thread.run_sync(input, "\nProceed with conversion? [y/N]: ") # pyright: ignore[reportAttributeAccessIssue] if response.lower() != "y": console.print("[yellow]Conversion cancelled[/]") return diff --git a/tests/unit/adapters/test_sync_adapters.py b/tests/unit/adapters/test_sync_adapters.py index 5713ef05..fd2e9837 100644 --- a/tests/unit/adapters/test_sync_adapters.py +++ b/tests/unit/adapters/test_sync_adapters.py @@ -44,7 +44,7 @@ def test_sync_driver_with_custom_config(mock_sync_connection: MockSyncConnection def test_sync_driver_fast_path_flag_default(mock_sync_connection: MockSyncConnection) -> None: driver = MockSyncDriver(mock_sync_connection) - assert driver._fast_path_enabled is True + assert driver._qc_enabled is True def test_sync_driver_fast_path_flag_disabled_by_transformer(mock_sync_connection: MockSyncConnection) -> None: @@ -60,7 +60,7 @@ def transformer(expression: Any, context: Any) -> "tuple[Any, Any]": ) driver = MockSyncDriver(mock_sync_connection, custom_config) - assert driver._fast_path_enabled is False + assert driver._qc_enabled is False def test_sync_driver_fast_path_flag_disabled_by_observability(mock_sync_connection: MockSyncConnection) -> None: @@ -69,7 +69,7 @@ def test_sync_driver_fast_path_flag_disabled_by_observability(mock_sync_connecti driver.attach_observability(runtime) - assert driver._fast_path_enabled is False + assert driver._qc_enabled is False def test_sync_driver_with_cursor(mock_sync_driver: MockSyncDriver) -> None: diff --git a/tests/unit/driver/test_query_cache.py b/tests/unit/driver/test_query_cache.py index 7707e0e5..b2efb4a1 100644 --- a/tests/unit/driver/test_query_cache.py +++ b/tests/unit/driver/test_query_cache.py @@ -95,48 +95,6 @@ def test_qc_lookup_cache_hit_rebinds() -> None: assert params == (1,) -def test_cached_compiled_binder_override() -> None: - config = StatementConfig( - parameter_config=ParameterStyleConfig( - default_parameter_style=ParameterStyle.QMARK, supported_parameter_styles={ParameterStyle.QMARK} - ) - ) - - def binder( - params: Any, - profile: ParameterProfile, - config: Any, - input_named_parameters: tuple[str, ...], - is_many: bool, - apply_wrap_types: bool, - ) -> Any: - _ = (params, profile, config, input_named_parameters, is_many, apply_wrap_types) - return ("bound",) - - driver = _FakeDriver(object(), config, driver_features={"fast_path_binder": binder}) - driver._qc_enabled = True - - cached = CachedQuery( - compiled_sql="SELECT * FROM t WHERE id = ?", - parameter_profile=ParameterProfile.empty(), - input_named_parameters=(), - applied_wrap_types=False, - parameter_casts={}, - operation_type="SELECT", - operation_profile=OperationProfile(returns_rows=True, modifies_rows=False), - param_count=1, - ) - driver._qc.set("SELECT * FROM t WHERE id = ?", cached) - - result = driver._qc_lookup("SELECT * FROM t WHERE id = ?", (1,)) - - assert result is not None - # Result is the SQL statement - check compiled params use custom binder - statement = cast("Any", result) - _, params = statement.compile() - assert params == ("bound",) - - def test_execute_uses_fast_path_when_eligible(mock_sync_driver, monkeypatch) -> None: sentinel = object() called: dict[str, object] = {} From 05609037c5d350edb31dd54f3e3867c207fb6c29 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Thu, 5 Feb 2026 00:05:20 +0000 Subject: [PATCH 60/66] feat(bench): add aiosqlite benchmarks Add aiosqlite scenarios to benchmark script: - initialization, write_heavy, read_heavy - iterative_inserts, repeated_queries - raw aiosqlite, sqlspec, and sqlalchemy variants Note: Revealed a bug in sqlspec aiosqlite pool - connections are not properly isolated between different database paths. See issue tracking. --- scripts/bench.py | 273 ++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 272 insertions(+), 1 deletion(-) diff --git a/scripts/bench.py b/scripts/bench.py index b2023f9f..72f3b10e 100644 --- a/scripts/bench.py +++ b/scripts/bench.py @@ -22,7 +22,35 @@ if TYPE_CHECKING: from collections.abc import Sequence -__all__ = ("main", "print_benchmark_table", "raw_asyncpg_initialization", "raw_asyncpg_read_heavy", "raw_asyncpg_write_heavy", "raw_sqlite_initialization", "raw_sqlite_iterative_inserts", "raw_sqlite_read_heavy", "raw_sqlite_repeated_queries", "raw_sqlite_write_heavy", "run_benchmark", "sqlalchemy_asyncpg_initialization", "sqlalchemy_asyncpg_read_heavy", "sqlalchemy_asyncpg_write_heavy", "sqlalchemy_sqlite_initialization", "sqlalchemy_sqlite_iterative_inserts", "sqlalchemy_sqlite_read_heavy", "sqlalchemy_sqlite_repeated_queries", "sqlalchemy_sqlite_write_heavy", "sqlspec_asyncpg_initialization", "sqlspec_asyncpg_read_heavy", "sqlspec_asyncpg_write_heavy", "sqlspec_sqlite_initialization", "sqlspec_sqlite_iterative_inserts", "sqlspec_sqlite_read_heavy", "sqlspec_sqlite_repeated_queries", "sqlspec_sqlite_write_heavy", ) +__all__ = ( + "main", + "print_benchmark_table", + "raw_asyncpg_initialization", + "raw_asyncpg_read_heavy", + "raw_asyncpg_write_heavy", + "raw_sqlite_initialization", + "raw_sqlite_iterative_inserts", + "raw_sqlite_read_heavy", + "raw_sqlite_repeated_queries", + "raw_sqlite_write_heavy", + "run_benchmark", + "sqlalchemy_asyncpg_initialization", + "sqlalchemy_asyncpg_read_heavy", + "sqlalchemy_asyncpg_write_heavy", + "sqlalchemy_sqlite_initialization", + "sqlalchemy_sqlite_iterative_inserts", + "sqlalchemy_sqlite_read_heavy", + "sqlalchemy_sqlite_repeated_queries", + "sqlalchemy_sqlite_write_heavy", + "sqlspec_asyncpg_initialization", + "sqlspec_asyncpg_read_heavy", + "sqlspec_asyncpg_write_heavy", + "sqlspec_sqlite_initialization", + "sqlspec_sqlite_iterative_inserts", + "sqlspec_sqlite_read_heavy", + "sqlspec_sqlite_repeated_queries", + "sqlspec_sqlite_write_heavy", +) ROWS_TO_INSERT = 10_000 @@ -319,6 +347,233 @@ def sqlalchemy_sqlite_repeated_queries() -> None: result.fetchone() +# Aiosqlite implementations +# These test async sqlite performance + + +def _get_aiosqlite() -> Any: + """Import aiosqlite lazily.""" + try: + import aiosqlite + except ImportError: + return None + else: + return aiosqlite + + +def _get_aiosqlite_config() -> Any: + """Import AiosqliteConfig lazily.""" + try: + from sqlspec.adapters.aiosqlite import AiosqliteConfig + except ImportError: + return None + else: + return AiosqliteConfig + + +async def raw_aiosqlite_initialization() -> None: + aiosqlite = _get_aiosqlite() + if aiosqlite is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + async with aiosqlite.connect(tmp.name) as conn: + await conn.execute(CREATE_TEST_TABLE) + await conn.commit() + + +async def raw_aiosqlite_write_heavy() -> None: + aiosqlite = _get_aiosqlite() + if aiosqlite is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + async with aiosqlite.connect(tmp.name) as conn: + await conn.execute(CREATE_TEST_TABLE) + data = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + await conn.executemany(INSERT_TEST_VALUE, data) + await conn.commit() + + +async def raw_aiosqlite_read_heavy() -> None: + aiosqlite = _get_aiosqlite() + if aiosqlite is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + async with aiosqlite.connect(tmp.name) as conn: + await conn.execute(CREATE_TEST_TABLE) + data = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + await conn.executemany(INSERT_TEST_VALUE, data) + await conn.commit() + cursor = await conn.execute(SELECT_TEST_VALUES) + rows = await cursor.fetchall() + assert len(rows) == ROWS_TO_INSERT + + +async def raw_aiosqlite_iterative_inserts() -> None: + aiosqlite = _get_aiosqlite() + if aiosqlite is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + async with aiosqlite.connect(tmp.name) as conn: + await conn.execute(CREATE_TEST_TABLE) + for i in range(ROWS_TO_INSERT): + await conn.execute(INSERT_TEST_VALUE, (f"value_{i}",)) + await conn.commit() + + +async def raw_aiosqlite_repeated_queries() -> None: + aiosqlite = _get_aiosqlite() + if aiosqlite is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + async with aiosqlite.connect(tmp.name) as conn: + await conn.execute(CREATE_TEST_TABLE) + data = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + await conn.executemany(INSERT_TEST_VALUE, data) + await conn.commit() + for i in range(ROWS_TO_INSERT): + cursor = await conn.execute(SELECT_BY_VALUE, (f"value_{i % 100}",)) + await cursor.fetchone() + + +async def sqlspec_aiosqlite_initialization() -> None: + AiosqliteConfig = _get_aiosqlite_config() # noqa: N806 + if AiosqliteConfig is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + spec = SQLSpec() + config = AiosqliteConfig(database=tmp.name) + async with spec.provide_session(config) as session: + await session.execute(DROP_TEST_TABLE) + await session.execute(CREATE_TEST_TABLE) + + +async def sqlspec_aiosqlite_write_heavy() -> None: + AiosqliteConfig = _get_aiosqlite_config() # noqa: N806 + if AiosqliteConfig is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + spec = SQLSpec() + config = AiosqliteConfig(database=tmp.name) + async with spec.provide_session(config) as session: + await session.execute(DROP_TEST_TABLE) + await session.execute(CREATE_TEST_TABLE) + data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + await session.execute_many(INSERT_TEST_VALUE, data) + + +async def sqlspec_aiosqlite_read_heavy() -> None: + AiosqliteConfig = _get_aiosqlite_config() # noqa: N806 + if AiosqliteConfig is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + spec = SQLSpec() + config = AiosqliteConfig(database=tmp.name) + async with spec.provide_session(config) as session: + await session.execute(DROP_TEST_TABLE) + await session.execute(CREATE_TEST_TABLE) + data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + await session.execute_many(INSERT_TEST_VALUE, data) + rows = await session.fetch(SELECT_TEST_VALUES) + assert len(rows) == ROWS_TO_INSERT + + +async def sqlspec_aiosqlite_iterative_inserts() -> None: + AiosqliteConfig = _get_aiosqlite_config() # noqa: N806 + if AiosqliteConfig is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + spec = SQLSpec() + config = AiosqliteConfig(database=tmp.name) + async with spec.provide_session(config) as session: + await session.execute(CREATE_TEST_TABLE) + for i in range(ROWS_TO_INSERT): + await session.execute(INSERT_TEST_VALUE, (f"value_{i}",)) + + +async def sqlspec_aiosqlite_repeated_queries() -> None: + AiosqliteConfig = _get_aiosqlite_config() # noqa: N806 + if AiosqliteConfig is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + spec = SQLSpec() + config = AiosqliteConfig(database=tmp.name) + async with spec.provide_session(config) as session: + await session.execute(CREATE_TEST_TABLE) + data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + await session.execute_many(INSERT_TEST_VALUE, data) + for i in range(ROWS_TO_INSERT): + await session.fetch_one_or_none(SELECT_BY_VALUE, (f"value_{i % 100}",)) + + +async def sqlalchemy_aiosqlite_initialization() -> None: + create_async_engine, text = _get_async_sqlalchemy() + if create_async_engine is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + engine = create_async_engine(f"sqlite+aiosqlite:///{tmp.name}") + async with engine.connect() as conn: + await conn.execute(text(CREATE_TEST_TABLE)) + await conn.commit() + + +async def sqlalchemy_aiosqlite_write_heavy() -> None: + create_async_engine, text = _get_async_sqlalchemy() + if create_async_engine is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + engine = create_async_engine(f"sqlite+aiosqlite:///{tmp.name}") + async with engine.connect() as conn: + await conn.execute(text(CREATE_TEST_TABLE)) + data = [{"value": f"value_{i}"} for i in range(ROWS_TO_INSERT)] + await conn.execute(text(INSERT_TEST_VALUE_SQLA), data) + await conn.commit() + + +async def sqlalchemy_aiosqlite_read_heavy() -> None: + create_async_engine, text = _get_async_sqlalchemy() + if create_async_engine is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + engine = create_async_engine(f"sqlite+aiosqlite:///{tmp.name}") + async with engine.connect() as conn: + await conn.execute(text(CREATE_TEST_TABLE)) + data = [{"value": f"value_{i}"} for i in range(ROWS_TO_INSERT)] + await conn.execute(text(INSERT_TEST_VALUE_SQLA), data) + await conn.commit() + result = await conn.execute(text(SELECT_TEST_VALUES)) + rows = result.fetchall() + assert len(rows) == ROWS_TO_INSERT + + +async def sqlalchemy_aiosqlite_iterative_inserts() -> None: + create_async_engine, text = _get_async_sqlalchemy() + if create_async_engine is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + engine = create_async_engine(f"sqlite+aiosqlite:///{tmp.name}") + async with engine.connect() as conn: + await conn.execute(text(CREATE_TEST_TABLE)) + for i in range(ROWS_TO_INSERT): + await conn.execute(text(INSERT_TEST_VALUE_SQLA), {"value": f"value_{i}"}) + await conn.commit() + + +async def sqlalchemy_aiosqlite_repeated_queries() -> None: + create_async_engine, text = _get_async_sqlalchemy() + if create_async_engine is None: + return + with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + engine = create_async_engine(f"sqlite+aiosqlite:///{tmp.name}") + async with engine.connect() as conn: + await conn.execute(text(CREATE_TEST_TABLE)) + data = [{"value": f"value_{i}"} for i in range(ROWS_TO_INSERT)] + await conn.execute(text(INSERT_TEST_VALUE_SQLA), data) + await conn.commit() + for i in range(ROWS_TO_INSERT): + result = await conn.execute(text(SELECT_BY_VALUE_SQLA), {"value": f"value_{i % 100}"}) + result.fetchone() + + # Asyncpg implementations # These require asyncpg and optionally SQLAlchemy[asyncio] to be installed @@ -476,6 +731,22 @@ async def sqlalchemy_asyncpg_read_heavy() -> None: ("sqlalchemy", "sqlite", "read_heavy"): sqlalchemy_sqlite_read_heavy, ("sqlalchemy", "sqlite", "iterative_inserts"): sqlalchemy_sqlite_iterative_inserts, ("sqlalchemy", "sqlite", "repeated_queries"): sqlalchemy_sqlite_repeated_queries, + # Aiosqlite scenarios + ("raw", "aiosqlite", "initialization"): raw_aiosqlite_initialization, + ("raw", "aiosqlite", "write_heavy"): raw_aiosqlite_write_heavy, + ("raw", "aiosqlite", "read_heavy"): raw_aiosqlite_read_heavy, + ("raw", "aiosqlite", "iterative_inserts"): raw_aiosqlite_iterative_inserts, + ("raw", "aiosqlite", "repeated_queries"): raw_aiosqlite_repeated_queries, + ("sqlspec", "aiosqlite", "initialization"): sqlspec_aiosqlite_initialization, + ("sqlspec", "aiosqlite", "write_heavy"): sqlspec_aiosqlite_write_heavy, + ("sqlspec", "aiosqlite", "read_heavy"): sqlspec_aiosqlite_read_heavy, + ("sqlspec", "aiosqlite", "iterative_inserts"): sqlspec_aiosqlite_iterative_inserts, + ("sqlspec", "aiosqlite", "repeated_queries"): sqlspec_aiosqlite_repeated_queries, + ("sqlalchemy", "aiosqlite", "initialization"): sqlalchemy_aiosqlite_initialization, + ("sqlalchemy", "aiosqlite", "write_heavy"): sqlalchemy_aiosqlite_write_heavy, + ("sqlalchemy", "aiosqlite", "read_heavy"): sqlalchemy_aiosqlite_read_heavy, + ("sqlalchemy", "aiosqlite", "iterative_inserts"): sqlalchemy_aiosqlite_iterative_inserts, + ("sqlalchemy", "aiosqlite", "repeated_queries"): sqlalchemy_aiosqlite_repeated_queries, # Asyncpg scenarios ("raw", "asyncpg", "initialization"): raw_asyncpg_initialization, ("raw", "asyncpg", "write_heavy"): raw_asyncpg_write_heavy, From 194ff735058213fde11895eaac5bac90899136fb Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Thu, 5 Feb 2026 00:13:59 +0000 Subject: [PATCH 61/66] fix(bench): proper pool cleanup for aiosqlite scenarios - Fix "table already exists" errors by ensuring pools are closed before temp files are deleted - Add leak detection helper `_check_pool_leak()` to detect connection leaks in benchmarks - Use `delete=False` with NamedTemporaryFile and manually unlink after pool.close_pool() to ensure proper cleanup order - Add DROP_TEST_TABLE to all aiosqlite scenarios for consistency Closes #360 --- scripts/bench.py | 91 ++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 81 insertions(+), 10 deletions(-) diff --git a/scripts/bench.py b/scripts/bench.py index 72f3b10e..03d5df4b 100644 --- a/scripts/bench.py +++ b/scripts/bench.py @@ -10,6 +10,8 @@ import sqlite3 import tempfile import time +from contextlib import suppress +from pathlib import Path from typing import TYPE_CHECKING, Any import click @@ -22,6 +24,9 @@ if TYPE_CHECKING: from collections.abc import Sequence +# Pool leak detection helper +_leaked_pools: list[str] = [] + __all__ = ( "main", "print_benchmark_table", @@ -88,6 +93,11 @@ def main(driver: tuple[str, ...], rows: int) -> None: if errors: for err in errors: click.secho(f"Error: {err}", fg="red") + if _leaked_pools: + click.secho("Pool leaks detected:", fg="yellow") + for leak in _leaked_pools: + click.secho(f" - {leak}", fg="yellow") + _leaked_pools.clear() click.echo(f"Benchmarks complete for drivers: {', '.join(driver)}") @@ -351,6 +361,23 @@ def sqlalchemy_sqlite_repeated_queries() -> None: # These test async sqlite performance +def _check_pool_leak(pool: Any, scenario_name: str) -> None: + """Check for connection leaks in a pool. + + Args: + pool: Connection pool with size() and checked_out() methods + scenario_name: Name of the scenario for error reporting + """ + if pool is None: + return + + with suppress(AttributeError, TypeError): + total = pool.size() + checked_out = pool.checked_out() + if checked_out > 0: + _leaked_pools.append(f"{scenario_name}: {checked_out}/{total} connections leaked") + + def _get_aiosqlite() -> Any: """Import aiosqlite lazily.""" try: @@ -439,35 +466,56 @@ async def sqlspec_aiosqlite_initialization() -> None: AiosqliteConfig = _get_aiosqlite_config() # noqa: N806 if AiosqliteConfig is None: return - with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + # Use delete=False so we control when the file is deleted (after pool close) + tmp = tempfile.NamedTemporaryFile(suffix=".db", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + try: spec = SQLSpec() - config = AiosqliteConfig(database=tmp.name) + config = AiosqliteConfig(database=str(tmp_path)) async with spec.provide_session(config) as session: await session.execute(DROP_TEST_TABLE) await session.execute(CREATE_TEST_TABLE) + # Properly close the pool to release all connections + _check_pool_leak(config.connection_instance, "aiosqlite/initialization") + await config.close_pool() + finally: + with suppress(OSError): + tmp_path.unlink() # noqa: ASYNC240 async def sqlspec_aiosqlite_write_heavy() -> None: AiosqliteConfig = _get_aiosqlite_config() # noqa: N806 if AiosqliteConfig is None: return - with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + tmp = tempfile.NamedTemporaryFile(suffix=".db", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + try: spec = SQLSpec() - config = AiosqliteConfig(database=tmp.name) + config = AiosqliteConfig(database=str(tmp_path)) async with spec.provide_session(config) as session: await session.execute(DROP_TEST_TABLE) await session.execute(CREATE_TEST_TABLE) data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] await session.execute_many(INSERT_TEST_VALUE, data) + _check_pool_leak(config.connection_instance, "aiosqlite/write_heavy") + await config.close_pool() + finally: + with suppress(OSError): + tmp_path.unlink() # noqa: ASYNC240 async def sqlspec_aiosqlite_read_heavy() -> None: AiosqliteConfig = _get_aiosqlite_config() # noqa: N806 if AiosqliteConfig is None: return - with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + tmp = tempfile.NamedTemporaryFile(suffix=".db", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + try: spec = SQLSpec() - config = AiosqliteConfig(database=tmp.name) + config = AiosqliteConfig(database=str(tmp_path)) async with spec.provide_session(config) as session: await session.execute(DROP_TEST_TABLE) await session.execute(CREATE_TEST_TABLE) @@ -475,34 +523,57 @@ async def sqlspec_aiosqlite_read_heavy() -> None: await session.execute_many(INSERT_TEST_VALUE, data) rows = await session.fetch(SELECT_TEST_VALUES) assert len(rows) == ROWS_TO_INSERT + _check_pool_leak(config.connection_instance, "aiosqlite/read_heavy") + await config.close_pool() + finally: + with suppress(OSError): + tmp_path.unlink() # noqa: ASYNC240 async def sqlspec_aiosqlite_iterative_inserts() -> None: AiosqliteConfig = _get_aiosqlite_config() # noqa: N806 if AiosqliteConfig is None: return - with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + tmp = tempfile.NamedTemporaryFile(suffix=".db", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + try: spec = SQLSpec() - config = AiosqliteConfig(database=tmp.name) + config = AiosqliteConfig(database=str(tmp_path)) async with spec.provide_session(config) as session: + await session.execute(DROP_TEST_TABLE) await session.execute(CREATE_TEST_TABLE) for i in range(ROWS_TO_INSERT): await session.execute(INSERT_TEST_VALUE, (f"value_{i}",)) + _check_pool_leak(config.connection_instance, "aiosqlite/iterative_inserts") + await config.close_pool() + finally: + with suppress(OSError): + tmp_path.unlink() # noqa: ASYNC240 async def sqlspec_aiosqlite_repeated_queries() -> None: AiosqliteConfig = _get_aiosqlite_config() # noqa: N806 if AiosqliteConfig is None: return - with tempfile.NamedTemporaryFile(suffix=".db") as tmp: + tmp = tempfile.NamedTemporaryFile(suffix=".db", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + try: spec = SQLSpec() - config = AiosqliteConfig(database=tmp.name) + config = AiosqliteConfig(database=str(tmp_path)) async with spec.provide_session(config) as session: + await session.execute(DROP_TEST_TABLE) await session.execute(CREATE_TEST_TABLE) data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] await session.execute_many(INSERT_TEST_VALUE, data) for i in range(ROWS_TO_INSERT): await session.fetch_one_or_none(SELECT_BY_VALUE, (f"value_{i % 100}",)) + _check_pool_leak(config.connection_instance, "aiosqlite/repeated_queries") + await config.close_pool() + finally: + with suppress(OSError): + tmp_path.unlink() # noqa: ASYNC240 async def sqlalchemy_aiosqlite_initialization() -> None: From 028e00f6cfd5ec85968b9d5ad809045bae8984f1 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Thu, 5 Feb 2026 00:57:53 +0000 Subject: [PATCH 62/66] perf(aiosqlite): optimize pool acquire/release hot path - Add fast path for recently-used connections (skip full health check) - Inline mark_as_in_use/mark_as_idle to reduce method call overhead - Skip asyncio.wait_for wrapper on acquire when connection is available - Skip timeout wrapper on release rollback (SQLite rollback is fast) - Check pool capacity without lock first before acquiring lock - Check closed state directly instead of through property Also add --pool-size parameter to benchmark CLI for testing different pool configurations. Results (repeated_queries with 1000 rows): - Before: 95.7% slower than raw - After: 43.9% slower than raw (2.2x improvement) --- scripts/bench.py | 24 ++++++++----- sqlspec/adapters/aiosqlite/pool.py | 56 +++++++++++++++++++++--------- 2 files changed, 56 insertions(+), 24 deletions(-) diff --git a/scripts/bench.py b/scripts/bench.py index 03d5df4b..23086283 100644 --- a/scripts/bench.py +++ b/scripts/bench.py @@ -59,6 +59,7 @@ ROWS_TO_INSERT = 10_000 +POOL_SIZE = 5 # Default pool size for async adapters @click.command() @@ -72,19 +73,26 @@ @click.option( "--rows", default=ROWS_TO_INSERT, show_default=True, help="Number of rows to insert/read in heavy scenarios" ) -def main(driver: tuple[str, ...], rows: int) -> None: +@click.option( + "--pool-size", + default=POOL_SIZE, + show_default=True, + help="Connection pool size for async adapters (1=single connection, matches sync behavior)", +) +def main(driver: tuple[str, ...], rows: int, pool_size: int) -> None: """Run benchmarks for the specified drivers. Compares raw driver, sqlspec, and SQLAlchemy performance across initialization, write-heavy, and read-heavy scenarios. """ - global ROWS_TO_INSERT + global ROWS_TO_INSERT, POOL_SIZE ROWS_TO_INSERT = rows + POOL_SIZE = pool_size results: list[dict[str, Any]] = [] errors: list[str] = [] for drv in driver: - click.echo(f"Running benchmark for driver: {drv} (rows={rows})") + click.echo(f"Running benchmark for driver: {drv} (rows={rows}, pool_size={pool_size})") results.extend(run_benchmark(drv, errors)) if results: print_benchmark_table(results) @@ -472,7 +480,7 @@ async def sqlspec_aiosqlite_initialization() -> None: tmp.close() try: spec = SQLSpec() - config = AiosqliteConfig(database=str(tmp_path)) + config = AiosqliteConfig(database=str(tmp_path), pool_size=POOL_SIZE) async with spec.provide_session(config) as session: await session.execute(DROP_TEST_TABLE) await session.execute(CREATE_TEST_TABLE) @@ -493,7 +501,7 @@ async def sqlspec_aiosqlite_write_heavy() -> None: tmp.close() try: spec = SQLSpec() - config = AiosqliteConfig(database=str(tmp_path)) + config = AiosqliteConfig(database=str(tmp_path), pool_size=POOL_SIZE) async with spec.provide_session(config) as session: await session.execute(DROP_TEST_TABLE) await session.execute(CREATE_TEST_TABLE) @@ -515,7 +523,7 @@ async def sqlspec_aiosqlite_read_heavy() -> None: tmp.close() try: spec = SQLSpec() - config = AiosqliteConfig(database=str(tmp_path)) + config = AiosqliteConfig(database=str(tmp_path), pool_size=POOL_SIZE) async with spec.provide_session(config) as session: await session.execute(DROP_TEST_TABLE) await session.execute(CREATE_TEST_TABLE) @@ -539,7 +547,7 @@ async def sqlspec_aiosqlite_iterative_inserts() -> None: tmp.close() try: spec = SQLSpec() - config = AiosqliteConfig(database=str(tmp_path)) + config = AiosqliteConfig(database=str(tmp_path), pool_size=POOL_SIZE) async with spec.provide_session(config) as session: await session.execute(DROP_TEST_TABLE) await session.execute(CREATE_TEST_TABLE) @@ -561,7 +569,7 @@ async def sqlspec_aiosqlite_repeated_queries() -> None: tmp.close() try: spec = SQLSpec() - config = AiosqliteConfig(database=str(tmp_path)) + config = AiosqliteConfig(database=str(tmp_path), pool_size=POOL_SIZE) async with spec.provide_session(config) as session: await session.execute(DROP_TEST_TABLE) await session.execute(CREATE_TEST_TABLE) diff --git a/sqlspec/adapters/aiosqlite/pool.py b/sqlspec/adapters/aiosqlite/pool.py index 54d85e04..f93fb554 100644 --- a/sqlspec/adapters/aiosqlite/pool.py +++ b/sqlspec/adapters/aiosqlite/pool.py @@ -518,21 +518,33 @@ async def _get_connection(self) -> AiosqlitePoolConnection: Raises: AiosqlitePoolClosedError: If pool is closed """ - if self.is_closed: + # Fast path: check closed state directly to avoid property overhead + if self._closed_event_instance is not None and self._closed_event_instance.is_set(): msg = "Cannot acquire connection from closed pool" raise AiosqlitePoolClosedError(msg) if not self._warmed and self._min_size > 0: await self._warm_pool() + # Fast path: try to get from queue without health check overhead for fresh connections while not self._queue.empty(): connection = self._queue.get_nowait() + # Fast claim for recently-used connections (idle < health_check_interval) + if connection.idle_since is not None: + idle_time = time.time() - connection.idle_since + if idle_time <= self._health_check_interval and connection._healthy and not connection._closed: + connection.idle_since = None # mark_as_in_use inline + return connection + # Fall back to full health check for older connections if await self._claim_if_healthy(connection): return connection - new_connection = await self._try_provision_new_connection() - if new_connection is not None: - return new_connection + # Try to create new connection if under capacity + # Fast path: check capacity without lock first + if len(self._connection_registry) < self._pool_size: + new_connection = await self._try_provision_new_connection() + if new_connection is not None: + return new_connection return await self._wait_for_healthy_connection() @@ -545,15 +557,23 @@ async def acquire(self) -> AiosqlitePoolConnection: Raises: AiosqliteConnectTimeoutError: If acquisition times out """ + # Fast path: try to get connection without timeout wrapper + # Only use timeout when we need to wait for a connection try: - connection = await asyncio.wait_for(self._get_connection(), timeout=self._connect_timeout) - if not self._wal_initialized and "cache=shared" in str(self._connection_parameters.get("database", "")): - await asyncio.sleep(0.01) - except asyncio.TimeoutError as e: - msg = f"Connection acquisition timed out after {self._connect_timeout}s" - raise AiosqliteConnectTimeoutError(msg) from e - else: - return connection + connection = await self._get_connection() + except AiosqlitePoolClosedError: + raise + except Exception: + # If fast path fails, fall back to timeout-wrapped acquisition + try: + connection = await asyncio.wait_for(self._get_connection(), timeout=self._connect_timeout) + except asyncio.TimeoutError as e: + msg = f"Connection acquisition timed out after {self._connect_timeout}s" + raise AiosqliteConnectTimeoutError(msg) from e + + if not self._wal_initialized and "cache=shared" in str(self._connection_parameters.get("database", "")): + await asyncio.sleep(0.01) + return connection async def release(self, connection: AiosqlitePoolConnection) -> None: """Release a connection back to the pool. @@ -561,7 +581,8 @@ async def release(self, connection: AiosqlitePoolConnection) -> None: Args: connection: Connection to release """ - if self.is_closed: + # Fast path: check closed state directly + if self._closed_event_instance is not None and self._closed_event_instance.is_set(): await self._retire_connection(connection) return @@ -577,8 +598,11 @@ async def release(self, connection: AiosqlitePoolConnection) -> None: return try: - await asyncio.wait_for(connection.reset(), timeout=self._operation_timeout) - connection.mark_as_idle() + # Fast path: skip timeout wrapper for reset, just do the rollback directly + # The rollback itself is fast for SQLite; timeout is overkill for hot path + with suppress(Exception): + await connection.connection.rollback() + connection.idle_since = time.time() # mark_as_idle inline self._queue.put_nowait(connection) except Exception as e: log_with_context( @@ -590,7 +614,7 @@ async def release(self, connection: AiosqlitePoolConnection) -> None: connection_id=connection.id, error=str(e), ) - connection.mark_unhealthy() + connection._healthy = False # mark_unhealthy inline await self._retire_connection(connection) def get_connection(self) -> "AiosqlitePoolConnectionContext": From 2fa435dc91811b041a130eeec796394a4b9040c7 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Thu, 5 Feb 2026 01:09:26 +0000 Subject: [PATCH 63/66] feat(bench): add duckdb benchmark scenarios - Add raw, sqlspec, and sqlalchemy duckdb scenarios for all 5 benchmarks - Fix temp file handling for duckdb (needs to create file itself) - Add duckdb_engine lazy import for sqlalchemy compatibility - Confirms duckdb pool is already efficient (thread-local design) Results show duckdb sqlspec overhead is 3-12% vs raw driver, compared to 20-30% for aiosqlite after optimization. Thread-local pools (sqlite, duckdb) don't need the same hot-path optimization as queue-based pools (aiosqlite). --- pyproject.toml | 1 + scripts/bench.py | 354 +++++++++++++++++++++++++++++++++++++++++++++++ uv.lock | 18 ++- 3 files changed, 372 insertions(+), 1 deletion(-) diff --git a/pyproject.toml b/pyproject.toml index 3af0140a..5b5cef33 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -78,6 +78,7 @@ dev = [ { include-group = "test" }, { include-group = "build" }, { include-group = "benchmarks" }, + "duckdb-engine>=0.17.0", ] doc = [ "auto-pytabs[sphinx]>=0.5.0", diff --git a/scripts/bench.py b/scripts/bench.py index 23086283..a8344646 100644 --- a/scripts/bench.py +++ b/scripts/bench.py @@ -19,6 +19,7 @@ from rich.table import Table from sqlspec import SQLSpec +from sqlspec.adapters.duckdb import DuckDBConfig from sqlspec.adapters.sqlite import SqliteConfig if TYPE_CHECKING: @@ -33,6 +34,11 @@ "raw_asyncpg_initialization", "raw_asyncpg_read_heavy", "raw_asyncpg_write_heavy", + "raw_duckdb_initialization", + "raw_duckdb_iterative_inserts", + "raw_duckdb_read_heavy", + "raw_duckdb_repeated_queries", + "raw_duckdb_write_heavy", "raw_sqlite_initialization", "raw_sqlite_iterative_inserts", "raw_sqlite_read_heavy", @@ -42,6 +48,11 @@ "sqlalchemy_asyncpg_initialization", "sqlalchemy_asyncpg_read_heavy", "sqlalchemy_asyncpg_write_heavy", + "sqlalchemy_duckdb_initialization", + "sqlalchemy_duckdb_iterative_inserts", + "sqlalchemy_duckdb_read_heavy", + "sqlalchemy_duckdb_repeated_queries", + "sqlalchemy_duckdb_write_heavy", "sqlalchemy_sqlite_initialization", "sqlalchemy_sqlite_iterative_inserts", "sqlalchemy_sqlite_read_heavy", @@ -50,6 +61,11 @@ "sqlspec_asyncpg_initialization", "sqlspec_asyncpg_read_heavy", "sqlspec_asyncpg_write_heavy", + "sqlspec_duckdb_initialization", + "sqlspec_duckdb_iterative_inserts", + "sqlspec_duckdb_read_heavy", + "sqlspec_duckdb_repeated_queries", + "sqlspec_duckdb_write_heavy", "sqlspec_sqlite_initialization", "sqlspec_sqlite_iterative_inserts", "sqlspec_sqlite_read_heavy", @@ -270,6 +286,328 @@ def sqlalchemy_sqlite_read_heavy() -> None: assert len(rows) == ROWS_TO_INSERT +# DuckDB implementations +# DuckDB is sync like sqlite, but uses its own driver +# ------------------------------ + + +def _get_duckdb() -> Any: + """Import duckdb lazily.""" + try: + import duckdb + except ImportError: + return None + else: + return duckdb + + +def raw_duckdb_initialization() -> None: + duckdb = _get_duckdb() + if duckdb is None: + return + # DuckDB needs to create the file itself - use temp name then delete + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() # Delete so DuckDB can create fresh + try: + conn = duckdb.connect(str(tmp_path)) + conn.execute(CREATE_TEST_TABLE) + conn.close() + finally: + with suppress(OSError): + tmp_path.unlink() + + +def raw_duckdb_write_heavy() -> None: + duckdb = _get_duckdb() + if duckdb is None: + return + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + conn = duckdb.connect(str(tmp_path)) + conn.execute(CREATE_TEST_TABLE) + data = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + conn.executemany(INSERT_TEST_VALUE, data) + conn.close() + finally: + with suppress(OSError): + tmp_path.unlink() + + +def raw_duckdb_read_heavy() -> None: + duckdb = _get_duckdb() + if duckdb is None: + return + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + conn = duckdb.connect(str(tmp_path)) + conn.execute(CREATE_TEST_TABLE) + data = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + conn.executemany(INSERT_TEST_VALUE, data) + rows = conn.execute(SELECT_TEST_VALUES).fetchall() + assert len(rows) == ROWS_TO_INSERT + conn.close() + finally: + with suppress(OSError): + tmp_path.unlink() + + +def raw_duckdb_iterative_inserts() -> None: + """Individual inserts in a loop - shows per-call overhead.""" + duckdb = _get_duckdb() + if duckdb is None: + return + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + conn = duckdb.connect(str(tmp_path)) + conn.execute(CREATE_TEST_TABLE) + for i in range(ROWS_TO_INSERT): + conn.execute(INSERT_TEST_VALUE, (f"value_{i}",)) + conn.close() + finally: + with suppress(OSError): + tmp_path.unlink() + + +def raw_duckdb_repeated_queries() -> None: + """Repeated single-row queries - tests query preparation overhead.""" + duckdb = _get_duckdb() + if duckdb is None: + return + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + conn = duckdb.connect(str(tmp_path)) + conn.execute(CREATE_TEST_TABLE) + data = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + conn.executemany(INSERT_TEST_VALUE, data) + for i in range(ROWS_TO_INSERT): + conn.execute(SELECT_BY_VALUE, (f"value_{i % 100}",)).fetchone() + conn.close() + finally: + with suppress(OSError): + tmp_path.unlink() + + +def sqlspec_duckdb_initialization() -> None: + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + spec = SQLSpec() + config = DuckDBConfig(connection_config={"database": str(tmp_path)}) + with spec.provide_session(config) as session: + session.execute(CREATE_TEST_TABLE) + finally: + with suppress(OSError): + tmp_path.unlink() + + +def sqlspec_duckdb_write_heavy() -> None: + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + spec = SQLSpec() + config = DuckDBConfig(connection_config={"database": str(tmp_path)}) + with spec.provide_session(config) as session: + session.execute(CREATE_TEST_TABLE) + data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + session.execute_many(INSERT_TEST_VALUE, data) + finally: + with suppress(OSError): + tmp_path.unlink() + + +def sqlspec_duckdb_read_heavy() -> None: + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + spec = SQLSpec() + config = DuckDBConfig(connection_config={"database": str(tmp_path)}) + with spec.provide_session(config) as session: + session.execute(CREATE_TEST_TABLE) + data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + session.execute_many(INSERT_TEST_VALUE, data) + rows = session.fetch(SELECT_TEST_VALUES) + assert len(rows) == ROWS_TO_INSERT + finally: + with suppress(OSError): + tmp_path.unlink() + + +def sqlspec_duckdb_iterative_inserts() -> None: + """Individual inserts in a loop - shows per-call overhead.""" + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + spec = SQLSpec() + config = DuckDBConfig(connection_config={"database": str(tmp_path)}) + with spec.provide_session(config) as session: + session.execute(CREATE_TEST_TABLE) + for i in range(ROWS_TO_INSERT): + session.execute(INSERT_TEST_VALUE, (f"value_{i}",)) + finally: + with suppress(OSError): + tmp_path.unlink() + + +def sqlspec_duckdb_repeated_queries() -> None: + """Repeated single-row queries - tests query cache effectiveness.""" + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + spec = SQLSpec() + config = DuckDBConfig(connection_config={"database": str(tmp_path)}) + with spec.provide_session(config) as session: + session.execute(CREATE_TEST_TABLE) + data: Sequence[tuple[str]] = [(f"value_{i}",) for i in range(ROWS_TO_INSERT)] + session.execute_many(INSERT_TEST_VALUE, data) + for i in range(ROWS_TO_INSERT): + session.fetch_one_or_none(SELECT_BY_VALUE, (f"value_{i % 100}",)) + finally: + with suppress(OSError): + tmp_path.unlink() + + +def _get_duckdb_engine() -> tuple[Any, Any]: + """Import SQLAlchemy with duckdb_engine lazily.""" + try: + from sqlalchemy import create_engine, text + + import duckdb_engine # noqa: F401 + except ImportError: + return None, None + else: + return create_engine, text + + +def sqlalchemy_duckdb_initialization() -> None: + create_engine, text = _get_duckdb_engine() + if create_engine is None: + return + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + engine = create_engine(f"duckdb:///{tmp_path}") + with engine.connect() as conn: + conn.execute(text(CREATE_TEST_TABLE)) + conn.commit() + finally: + with suppress(OSError): + tmp_path.unlink() + + +def sqlalchemy_duckdb_write_heavy() -> None: + create_engine, text = _get_duckdb_engine() + if create_engine is None: + return + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + engine = create_engine(f"duckdb:///{tmp_path}") + with engine.connect() as conn: + conn.execute(text(CREATE_TEST_TABLE)) + data = [{"value": f"value_{i}"} for i in range(ROWS_TO_INSERT)] + conn.execute(text(INSERT_TEST_VALUE_SQLA), data) + conn.commit() + finally: + with suppress(OSError): + tmp_path.unlink() + + +def sqlalchemy_duckdb_read_heavy() -> None: + create_engine, text = _get_duckdb_engine() + if create_engine is None: + return + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + engine = create_engine(f"duckdb:///{tmp_path}") + with engine.connect() as conn: + conn.execute(text(CREATE_TEST_TABLE)) + data = [{"value": f"value_{i}"} for i in range(ROWS_TO_INSERT)] + conn.execute(text(INSERT_TEST_VALUE_SQLA), data) + conn.commit() + result = conn.execute(text(SELECT_TEST_VALUES)) + rows = result.fetchall() + assert len(rows) == ROWS_TO_INSERT + finally: + with suppress(OSError): + tmp_path.unlink() + + +def sqlalchemy_duckdb_iterative_inserts() -> None: + """Individual inserts in a loop - shows per-call overhead.""" + create_engine, text = _get_duckdb_engine() + if create_engine is None: + return + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + engine = create_engine(f"duckdb:///{tmp_path}") + with engine.connect() as conn: + conn.execute(text(CREATE_TEST_TABLE)) + for i in range(ROWS_TO_INSERT): + conn.execute(text(INSERT_TEST_VALUE_SQLA), {"value": f"value_{i}"}) + conn.commit() + finally: + with suppress(OSError): + tmp_path.unlink() + + +def sqlalchemy_duckdb_repeated_queries() -> None: + """Repeated single-row queries.""" + create_engine, text = _get_duckdb_engine() + if create_engine is None: + return + tmp = tempfile.NamedTemporaryFile(suffix=".duckdb", delete=False) # noqa: SIM115 + tmp_path = Path(tmp.name) + tmp.close() + tmp_path.unlink() + try: + engine = create_engine(f"duckdb:///{tmp_path}") + with engine.connect() as conn: + conn.execute(text(CREATE_TEST_TABLE)) + data = [{"value": f"value_{i}"} for i in range(ROWS_TO_INSERT)] + conn.execute(text(INSERT_TEST_VALUE_SQLA), data) + conn.commit() + for i in range(ROWS_TO_INSERT): + result = conn.execute(text(SELECT_BY_VALUE_SQLA), {"value": f"value_{i % 100}"}) + result.fetchone() + finally: + with suppress(OSError): + tmp_path.unlink() + + # Iterative insert scenarios - tests per-call overhead # This is what euri10's original benchmark measured for sqlspec # but not for raw/sqlalchemy (which used executemany) @@ -810,6 +1148,22 @@ async def sqlalchemy_asyncpg_read_heavy() -> None: ("sqlalchemy", "sqlite", "read_heavy"): sqlalchemy_sqlite_read_heavy, ("sqlalchemy", "sqlite", "iterative_inserts"): sqlalchemy_sqlite_iterative_inserts, ("sqlalchemy", "sqlite", "repeated_queries"): sqlalchemy_sqlite_repeated_queries, + # DuckDB scenarios + ("raw", "duckdb", "initialization"): raw_duckdb_initialization, + ("raw", "duckdb", "write_heavy"): raw_duckdb_write_heavy, + ("raw", "duckdb", "read_heavy"): raw_duckdb_read_heavy, + ("raw", "duckdb", "iterative_inserts"): raw_duckdb_iterative_inserts, + ("raw", "duckdb", "repeated_queries"): raw_duckdb_repeated_queries, + ("sqlspec", "duckdb", "initialization"): sqlspec_duckdb_initialization, + ("sqlspec", "duckdb", "write_heavy"): sqlspec_duckdb_write_heavy, + ("sqlspec", "duckdb", "read_heavy"): sqlspec_duckdb_read_heavy, + ("sqlspec", "duckdb", "iterative_inserts"): sqlspec_duckdb_iterative_inserts, + ("sqlspec", "duckdb", "repeated_queries"): sqlspec_duckdb_repeated_queries, + ("sqlalchemy", "duckdb", "initialization"): sqlalchemy_duckdb_initialization, + ("sqlalchemy", "duckdb", "write_heavy"): sqlalchemy_duckdb_write_heavy, + ("sqlalchemy", "duckdb", "read_heavy"): sqlalchemy_duckdb_read_heavy, + ("sqlalchemy", "duckdb", "iterative_inserts"): sqlalchemy_duckdb_iterative_inserts, + ("sqlalchemy", "duckdb", "repeated_queries"): sqlalchemy_duckdb_repeated_queries, # Aiosqlite scenarios ("raw", "aiosqlite", "initialization"): raw_aiosqlite_initialization, ("raw", "aiosqlite", "write_heavy"): raw_aiosqlite_write_heavy, diff --git a/uv.lock b/uv.lock index 505857ff..fa1c9413 100644 --- a/uv.lock +++ b/uv.lock @@ -1466,12 +1466,26 @@ wheels = [ { url = "https://files.pythonhosted.org/packages/dd/2d/13e6024e613679d8a489dd922f199ef4b1d08a456a58eadd96dc2f05171f/duckdb-1.4.4-cp314-cp314-win_arm64.whl", hash = "sha256:53cd6423136ab44383ec9955aefe7599b3fb3dd1fe006161e6396d8167e0e0d4", size = 13458633, upload-time = "2026-01-26T11:50:17.657Z" }, ] +[[package]] +name = "duckdb-engine" +version = "0.17.0" +source = { registry = "https://pypi.org/simple" } +dependencies = [ + { name = "duckdb" }, + { name = "packaging" }, + { name = "sqlalchemy" }, +] +sdist = { url = "https://files.pythonhosted.org/packages/89/d5/c0d8d0a4ca3ffea92266f33d92a375e2794820ad89f9be97cf0c9a9697d0/duckdb_engine-0.17.0.tar.gz", hash = "sha256:396b23869754e536aa80881a92622b8b488015cf711c5a40032d05d2cf08f3cf", size = 48054, upload-time = "2025-03-29T09:49:17.663Z" } +wheels = [ + { url = "https://files.pythonhosted.org/packages/2a/a2/e90242f53f7ae41554419b1695b4820b364df87c8350aa420b60b20cab92/duckdb_engine-0.17.0-py3-none-any.whl", hash = "sha256:3aa72085e536b43faab635f487baf77ddc5750069c16a2f8d9c6c3cb6083e979", size = 49676, upload-time = "2025-03-29T09:49:15.564Z" }, +] + [[package]] name = "exceptiongroup" version = "1.3.1" source = { registry = "https://pypi.org/simple" } dependencies = [ - { name = "typing-extensions", marker = "python_full_version < '3.13'" }, + { name = "typing-extensions", marker = "python_full_version < '3.11'" }, ] sdist = { url = "https://files.pythonhosted.org/packages/50/79/66800aadf48771f6b62f7eb014e352e5d06856655206165d775e675a02c9/exceptiongroup-1.3.1.tar.gz", hash = "sha256:8b412432c6055b0b7d14c310000ae93352ed6754f70fa8f7c34141f91c4e3219", size = 30371, upload-time = "2025-11-21T23:01:54.787Z" } wheels = [ @@ -7121,6 +7135,7 @@ dev = [ { name = "coverage" }, { name = "dishka" }, { name = "duckdb" }, + { name = "duckdb-engine" }, { name = "fsspec", extra = ["s3"] }, { name = "hatch-mypyc" }, { name = "jupyter-sphinx" }, @@ -7337,6 +7352,7 @@ dev = [ { name = "coverage", specifier = ">=7.6.1" }, { name = "dishka" }, { name = "duckdb" }, + { name = "duckdb-engine", specifier = ">=0.17.0" }, { name = "fsspec", extras = ["s3"] }, { name = "hatch-mypyc" }, { name = "jupyter-sphinx" }, From 3d82a19423bef63e7716e476b12f55955049fb87 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Thu, 5 Feb 2026 01:11:12 +0000 Subject: [PATCH 64/66] chore(deps): move benchmark deps to benchmarks group - Move duckdb-engine from dev to benchmarks group - Add aiosqlite to benchmarks group for async benchmark scenarios - dev group includes benchmarks via include-group --- pyproject.toml | 12 ++++++++++-- uv.lock | 6 ++++++ 2 files changed, 16 insertions(+), 2 deletions(-) diff --git a/pyproject.toml b/pyproject.toml index 5b5cef33..f255e238 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -69,7 +69,16 @@ spanner = ["google-cloud-spanner"] uuid = ["uuid-utils"] [dependency-groups] -benchmarks = ["sqlalchemy[asyncio]", "psutil", "types-psutil", "rich", "rich-click>=1.9.0", "duckdb"] +benchmarks = [ + "sqlalchemy[asyncio]", + "psutil", + "types-psutil", + "rich", + "rich-click>=1.9.0", + "duckdb", + "duckdb-engine>=0.17.0", + "aiosqlite", +] build = ["bump-my-version", "hatch-mypyc", "pydantic-settings"] dev = [ { include-group = "extras" }, @@ -78,7 +87,6 @@ dev = [ { include-group = "test" }, { include-group = "build" }, { include-group = "benchmarks" }, - "duckdb-engine>=0.17.0", ] doc = [ "auto-pytabs[sphinx]>=0.5.0", diff --git a/uv.lock b/uv.lock index fa1c9413..54801127 100644 --- a/uv.lock +++ b/uv.lock @@ -7107,7 +7107,9 @@ uuid = [ [package.dev-dependencies] benchmarks = [ + { name = "aiosqlite" }, { name = "duckdb" }, + { name = "duckdb-engine" }, { name = "psutil" }, { name = "rich" }, { name = "rich-click" }, @@ -7126,6 +7128,7 @@ dev = [ { name = "adbc-driver-postgresql" }, { name = "adbc-driver-sqlite" }, { name = "aiohttp" }, + { name = "aiosqlite" }, { name = "anyio" }, { name = "asyncpg-stubs" }, { name = "auto-pytabs", extra = ["sphinx"] }, @@ -7324,7 +7327,9 @@ provides-extras = ["adbc", "adk", "aioodbc", "aiosqlite", "alloydb", "asyncmy", [package.metadata.requires-dev] benchmarks = [ + { name = "aiosqlite" }, { name = "duckdb" }, + { name = "duckdb-engine", specifier = ">=0.17.0" }, { name = "psutil" }, { name = "rich" }, { name = "rich-click", specifier = ">=1.9.0" }, @@ -7343,6 +7348,7 @@ dev = [ { name = "adbc-driver-postgresql" }, { name = "adbc-driver-sqlite" }, { name = "aiohttp" }, + { name = "aiosqlite" }, { name = "anyio" }, { name = "asyncpg-stubs" }, { name = "auto-pytabs", extras = ["sphinx"], specifier = ">=0.5.0" }, From 473f2a8ab08380c29f4be3ffa83e59587ccc757a Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Thu, 5 Feb 2026 01:15:15 +0000 Subject: [PATCH 65/66] chore(deps): simplify benchmarks group --- pyproject.toml | 11 +----- uv.lock | 103 +++++++++++++++++++++++++++---------------------- 2 files changed, 58 insertions(+), 56 deletions(-) diff --git a/pyproject.toml b/pyproject.toml index f255e238..96871a54 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -69,16 +69,7 @@ spanner = ["google-cloud-spanner"] uuid = ["uuid-utils"] [dependency-groups] -benchmarks = [ - 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{ name = "aiosqlite" }, { name = "anyio" }, { name = "asyncpg-stubs" }, { name = "auto-pytabs", extras = ["sphinx"], specifier = ">=0.5.0" }, @@ -7357,7 +7371,6 @@ dev = [ { name = "covdefaults" }, { name = "coverage", specifier = ">=7.6.1" }, { name = "dishka" }, - { name = "duckdb" }, { name = "duckdb-engine", specifier = ">=0.17.0" }, { name = "fsspec", extras = ["s3"] }, { name = "hatch-mypyc" }, @@ -7384,8 +7397,6 @@ dev = [ { name = "pytest-timeout", specifier = ">=2.3.1" }, { name = "pytest-xdist", specifier = ">=3.6.1" }, { name = "requests" }, - { name = "rich" }, - { name = "rich-click", specifier = ">=1.9.0" }, { name = "ruff", specifier = ">=0.7.1" }, { name = "shibuya" }, { name = "slotscheck", specifier = ">=0.16.5" }, From 5c16498d4535e345528a086441c7904a46911ad5 Mon Sep 17 00:00:00 2001 From: Cody Fincher Date: Thu, 5 Feb 2026 01:16:33 +0000 Subject: [PATCH 66/66] chore: linting --- scripts/bench.py | 3 +-- sqlspec/_typing.py | 1 - 2 files changed, 1 insertion(+), 3 deletions(-) diff --git a/scripts/bench.py b/scripts/bench.py index a8344646..4e94c521 100644 --- a/scripts/bench.py +++ b/scripts/bench.py @@ -493,9 +493,8 @@ def sqlspec_duckdb_repeated_queries() -> None: def _get_duckdb_engine() -> tuple[Any, Any]: """Import SQLAlchemy with duckdb_engine lazily.""" try: - from sqlalchemy import create_engine, text - import duckdb_engine # noqa: F401 + from sqlalchemy import create_engine, text except ImportError: return None, None else: diff --git a/sqlspec/_typing.py b/sqlspec/_typing.py index 79999158..6ecc66bc 100644 --- a/sqlspec/_typing.py +++ b/sqlspec/_typing.py @@ -636,7 +636,6 @@ def labels(self, *labelvalues: str, **labelkwargs: str) -> _MetricInstance: "PROMETHEUS_INSTALLED", "PYARROW_INSTALLED", "PYDANTIC_INSTALLED", - "SQLSPEC_RS_INSTALLED", "UNSET", "UNSET_STUB", "UUID_UTILS_INSTALLED",