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Pushdown CAST in JOIN criteria for PostgreSql #21939
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ssheikin
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May 13, 2024
@@ -1013,6 +1012,66 @@ public void testInPredicatePushdown() | |||
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@Test |
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Add case sensitive tests
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assertThatThrownBy(() -> getQueryRunner().execute(session, "SELECT a.a2, b.b2 FROM %s a JOIN %s b ON CAST(a.a1 AS %s) = b.b1".formatted(tableA.getName(), tableB.getName(), testCaseMoney.castType()))); | ||
// the best we can do - cast right side to a trino type, to which is resolved left side. After pushdown, trino type is mapped to native type | ||
assertThat(query(session, "SELECT a.a2, b.b2 FROM %s a JOIN %s b ON CAST(a.a1 AS %s) = CAST(b.b1 AS %s)".formatted(tableA.getName(), tableB.getName(), testCaseMoney.castType(), testCaseMoney.castType()))) |
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This is a breaking change, so has to be covered by config/session property toggle.
@Praveen2112
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Extend rule to support join pushdown in cases where join conditions contain Calls causing Project nodes to appear over scans. Fix failing tests
Co-authored-by: Semion Paramonow <semion.paramonow@starburstdata.com>
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Description
Based and requires #21607
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