refactor: fix test_geo_x_non_point and test_geo_drop_duplicates

Author: chelsea-lin

bigframes/core/compile/sqlglot/aggregations/windows.py

@@ -174,7 +174,7 @@ def _compile_group_by_key(key: ex.Expression) -> sge.Expression:
     if key.dtype == dtypes.FLOAT_DTYPE:
         expr = sge.Cast(this=expr, to="STRING")
     elif key.dtype == dtypes.GEO_DTYPE:
-        expr = sge.Cast(this=expr, to="BYTES")
+        expr = sge.func("ST_ASBINARY", expr)
     elif key.dtype == dtypes.JSON_DTYPE:
         expr = sge.func("TO_JSON_STRING", expr)
     return expr

tests/unit/core/compile/sqlglot/aggregations/test_windows.py

@@ -114,7 +114,7 @@ def test_apply_window_if_present_grouping_no_ordering(self):
         )
         self.assertEqual(
             result.sql(dialect="bigquery"),
-            "value OVER (PARTITION BY `col1`, CAST(`col2` AS STRING), TO_JSON_STRING(`col3`), CAST(`col4` AS BYTES))",
+            "value OVER (PARTITION BY `col1`, CAST(`col2` AS STRING), TO_JSON_STRING(`col3`), ST_ASBINARY(`col4`))",
         )
 
     def test_apply_window_if_present_range_bounded(self):