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fix: Fix read_gbq with ORDER BY query and index_col set #963

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TrevorBergeron merged 3 commits into from
Mar 17, 2025
Merged

fix: Fix read_gbq with ORDER BY query and index_col set #963

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68d6755
fix: Fix read_gbq with ORDER BY query and index_col set
TrevorBergeron Sep 5, 2024
ae8f544
add integration test
TrevorBergeron Sep 5, 2024
2db90d6
Merge branch 'main' into order_by_cluster_fix
tswast Feb 3, 2025
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2 changes: 1 addition & 1 deletion bigframes/core/blocks.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2573,7 +2573,7 @@ def _get_rows_as_json_values(self) -> Block:
# The only ways this code is used is through df.apply(axis=1) cope path
# TODO: Stop using internal API
destination, query_job = self.session._loader._query_to_destination(
json_sql, index_cols=[ordering_column_name], api_name="apply"
json_sql, cluster_candidates=[ordering_column_name], api_name="apply"
)
if not destination:
raise ValueError(f"Query job {query_job} did not produce result table")
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7 changes: 4 additions & 3 deletions bigframes/session/loader.py
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Expand Up @@ -603,9 +603,10 @@ def read_gbq_query(
time_travel_timestamp=None,
)

# No cluster candidates as user query might not be clusterable (eg because of ORDER BY clause)
destination, query_job = self._query_to_destination(
query,
index_cols,
cluster_candidates=[],
api_name=api_name,
configuration=configuration,
)
Expand Down Expand Up @@ -642,7 +643,7 @@ def read_gbq_query(
def _query_to_destination(
self,
query: str,
index_cols: List[str],
cluster_candidates: List[str],
api_name: str,
configuration: dict = {"query": {"useQueryCache": True}},
do_clustering=True,
Expand All @@ -665,7 +666,7 @@ def _query_to_destination(
assert schema is not None
if do_clustering:
cluster_cols = bf_io_bigquery.select_cluster_cols(
schema, cluster_candidates=index_cols
schema, cluster_candidates=cluster_candidates
)
else:
cluster_cols = []
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3 changes: 2 additions & 1 deletion tests/system/small/test_session.py
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Original file line number Diff line number Diff line change
Expand Up @@ -129,9 +129,10 @@ def test_read_gbq_w_unknown_index_col(
CONCAT(t.string_col, "_2") AS my_strings,
t.int64_col > 0 AS my_bools,
FROM `{scalars_table_id}` AS t
ORDER BY my_strings
""",
["my_strings"],
id="string_index",
id="string_index_w_order_by",
),
pytest.param(
"SELECT GENERATE_UUID() AS uuid, 0 AS my_value FROM UNNEST(GENERATE_ARRAY(1, 20))",
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