mahesh kumar behera created HIVE-23921:
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Summary: Support HiveJoinProjectTransposeRule for Anti Join
Key: HIVE-23921
URL: https://issues.apache.org/jira/browse/HIVE-23921
Project: Hive
Issue Type: Bug
Reporter: mahesh kumar behera
Assignee: mahesh kumar behera
If we have a PK-FK join that is only appending columns to the FK side, it
basically means it is not filtering anything (everything is matching). If that
is the case, then ANTIJOIN result would be empty. We could detect this at
planning time and trigger the rewriting.
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