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https://issues.apache.org/jira/browse/HIVE-23921?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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mahesh kumar behera reassigned HIVE-23921:
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> 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
> Priority: Major
>
> 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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