weihua zhang created IMPALA-14167:
-------------------------------------
Summary: Calcite Planner: union return wrong result
Key: IMPALA-14167
URL: https://issues.apache.org/jira/browse/IMPALA-14167
Project: IMPALA
Issue Type: Sub-task
Reporter: weihua zhang
{code:sql}
CREATE TABLE test_unionall (date_col DATE);
INSERT INTO test_unionall values('2025-03-18');
set use_calcite_planner=0;
SELECT * FROM (
SELECT date_col FROM test_unionall
UNION ALL
SELECT '2025-03-17 12:00:00' FROM test_unionall
) AS t1;
+------------+
| date_col |
+------------+
| 2025-03-18 |
| 2025-03-17 |
+------------+
{code}
but
{code:sql}
set use_calcite_planner=1;
SELECT * FROM (
SELECT date_col FROM test_unionall
UNION ALL
SELECT '2025-03-17 12:00:00' FROM test_unionall
) AS t1;
+---------------------+
| date_col |
+---------------------+
| 2025-03-18 |
| 2025-03-17 12:00:00 |
+---------------------+
{code}
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