chore: Migrate up to 5 scalar operators to SQLGlot

Migrated cos, hash, isnull, notnull, and sin operators.

Author: chelsea-lin

bigframes/core/compile/sqlglot/expressions/unary_compiler.py

@@ -72,6 +72,31 @@ def _(op: ops.ArraySliceOp, expr: TypedExpr) -> sge.Expression:
     return sge.array(selected_elements)
 
 
+@UNARY_OP_REGISTRATION.register(ops.cos_op)
+def _(op: ops.base_ops.UnaryOp, expr: TypedExpr) -> sge.Expression:
+    return sge.func("cos", expr.expr)
+
+
+@UNARY_OP_REGISTRATION.register(ops.hash_op)
+def _(op: ops.base_ops.UnaryOp, expr: TypedExpr) -> sge.Expression:
+    return sge.func("FARM_FINGERPRINT", expr.expr)
+
+
+@UNARY_OP_REGISTRATION.register(ops.isnull_op)
+def _(op: ops.base_ops.UnaryOp, expr: TypedExpr) -> sge.Expression:
+    return sge.Is(this=expr.expr, expression=sge.Null())
+
+
+@UNARY_OP_REGISTRATION.register(ops.notnull_op)
+def _(op: ops.base_ops.UnaryOp, expr: TypedExpr) -> sge.Expression:
+    return sge.Not(this=sge.Is(this=expr.expr, expression=sge.Null()))
+
+
+@UNARY_OP_REGISTRATION.register(ops.sin_op)
+def _(op: ops.base_ops.UnaryOp, expr: TypedExpr) -> sge.Expression:
+    return sge.func("sin", expr.expr)
+
+
 # JSON Ops
 @UNARY_OP_REGISTRATION.register(ops.JSONExtract)
 def _(op: ops.JSONExtract, expr: TypedExpr) -> sge.Expression:

tests/unit/core/compile/sqlglot/expressions/snapshots/test_unary_compiler/test_cos/out.sql

@@ -0,0 +1,13 @@
+WITH `bfcte_0` AS (
+  SELECT
+    `float64_col` AS `bfcol_0`
+  FROM `bigframes-dev`.`sqlglot_test`.`scalar_types`
+), `bfcte_1` AS (
+  SELECT
+    *,
+    cos(`bfcol_0`) AS `bfcol_1`
+  FROM `bfcte_0`
+)
+SELECT
+  `bfcol_1` AS `float64_col`
+FROM `bfcte_1`

tests/unit/core/compile/sqlglot/expressions/snapshots/test_unary_compiler/test_hash/out.sql

@@ -0,0 +1,13 @@
+WITH `bfcte_0` AS (
+  SELECT
+    `string_col` AS `bfcol_0`
+  FROM `bigframes-dev`.`sqlglot_test`.`scalar_types`
+), `bfcte_1` AS (
+  SELECT
+    *,
+    FARM_FINGERPRINT(`bfcol_0`) AS `bfcol_1`
+  FROM `bfcte_0`
+)
+SELECT
+  `bfcol_1` AS `string_col`
+FROM `bfcte_1`

tests/unit/core/compile/sqlglot/expressions/snapshots/test_unary_compiler/test_isnull/out.sql

@@ -0,0 +1,13 @@
+WITH `bfcte_0` AS (
+  SELECT
+    `float64_col` AS `bfcol_0`
+  FROM `bigframes-dev`.`sqlglot_test`.`scalar_types`
+), `bfcte_1` AS (
+  SELECT
+    *,
+    `bfcol_0` IS NULL AS `bfcol_1`
+  FROM `bfcte_0`
+)
+SELECT
+  `bfcol_1` AS `float64_col`
+FROM `bfcte_1`

tests/unit/core/compile/sqlglot/expressions/snapshots/test_unary_compiler/test_notnull/out.sql

@@ -0,0 +1,13 @@
+WITH `bfcte_0` AS (
+  SELECT
+    `float64_col` AS `bfcol_0`
+  FROM `bigframes-dev`.`sqlglot_test`.`scalar_types`
+), `bfcte_1` AS (
+  SELECT
+    *,
+    NOT `bfcol_0` IS NULL AS `bfcol_1`
+  FROM `bfcte_0`
+)
+SELECT
+  `bfcol_1` AS `float64_col`
+FROM `bfcte_1`

tests/unit/core/compile/sqlglot/expressions/snapshots/test_unary_compiler/test_sin/out.sql

@@ -0,0 +1,13 @@
+WITH `bfcte_0` AS (
+  SELECT
+    `float64_col` AS `bfcol_0`
+  FROM `bigframes-dev`.`sqlglot_test`.`scalar_types`
+), `bfcte_1` AS (
+  SELECT
+    *,
+    sin(`bfcol_0`) AS `bfcol_1`
+  FROM `bfcte_0`
+)
+SELECT
+  `bfcol_1` AS `float64_col`
+FROM `bfcte_1`

tests/unit/core/compile/sqlglot/expressions/test_unary_compiler.py

@@ -58,6 +58,36 @@ def test_array_slice_with_start_and_stop(repeated_types_df: bpd.DataFrame, snaps
     snapshot.assert_match(sql, "out.sql")
 
 
+def test_cos(scalar_types_df: bpd.DataFrame, snapshot):
+    bf_df = scalar_types_df[["float64_col"]]
+    sql = _apply_unary_op(bf_df, ops.cos_op, "float64_col")
+    snapshot.assert_match(sql, "out.sql")
+
+
+def test_hash(scalar_types_df: bpd.DataFrame, snapshot):
+    bf_df = scalar_types_df[["string_col"]]
+    sql = _apply_unary_op(bf_df, ops.hash_op, "string_col")
+    snapshot.assert_match(sql, "out.sql")
+
+
+def test_isnull(scalar_types_df: bpd.DataFrame, snapshot):
+    bf_df = scalar_types_df[["float64_col"]]
+    sql = _apply_unary_op(bf_df, ops.isnull_op, "float64_col")
+    snapshot.assert_match(sql, "out.sql")
+
+
+def test_notnull(scalar_types_df: bpd.DataFrame, snapshot):
+    bf_df = scalar_types_df[["float64_col"]]
+    sql = _apply_unary_op(bf_df, ops.notnull_op, "float64_col")
+    snapshot.assert_match(sql, "out.sql")
+
+
+def test_sin(scalar_types_df: bpd.DataFrame, snapshot):
+    bf_df = scalar_types_df[["float64_col"]]
+    sql = _apply_unary_op(bf_df, ops.sin_op, "float64_col")
+    snapshot.assert_match(sql, "out.sql")
+
+
 def test_json_extract(json_types_df: bpd.DataFrame, snapshot):
     bf_df = json_types_df[["json_col"]]
     sql = _apply_unary_op(bf_df, ops.JSONExtract(json_path="$"), "json_col")