skip tests for sqlglot sql formatting issues

Author: chelsea-lin

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

@@ -680,8 +680,3 @@ def _(op: ops.base_ops.UnaryOp, expr: TypedExpr) -> sge.Expression:
 @UNARY_OP_REGISTRATION.register(ops.year_op)
 def _(op: ops.base_ops.UnaryOp, expr: TypedExpr) -> sge.Expression:
     return sge.Extract(this=sge.Identifier(this="YEAR"), expression=expr.expr)
-
-
-@UNARY_OP_REGISTRATION.register(ops.UnixMicros)
-def _(op: ops.UnixMicros, expr: TypedExpr) -> sge.Expression:
-    return sge.func("UNIX_MICROS", expr.expr)

tests/unit/core/compile/sqlglot/test_compile_window.py

@@ -13,14 +13,23 @@
 # limitations under the License.
 
 import numpy as np
+from packaging import version
 import pandas as pd
 import pytest
+import sqlglot
 
 import bigframes.pandas as bpd
 
 pytest.importorskip("pytest_snapshot")
 
 
+if version.Version(sqlglot.__version__) < version.Version("25.0.0"):
+    pytest.skip(
+        "Skip tests for sqlglot < 25.0.0 due to SQL formatting issues",
+        allow_module_level=True,
+    )
+
+
 def test_compile_window_w_rolling(scalar_types_df: bpd.DataFrame, snapshot):
     bf_df = scalar_types_df[["int64_col"]].sort_index()
     result = bf_df.rolling(window=3).sum()