HIVE-27939: Many UNION ALL throws SemanticException when trying to remove partition predicates: fail to find child from parent #4992
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What changes were proposed in this pull request?
Complex queries with many UNIONs will fail with a SemanticException. So, this PR will be fix that issue.
Why are the changes needed?
Complex queries with many UNIONs will fail with a SemanticException.
Does this PR introduce any user-facing change?
No.
Is the change a dependency upgrade?
No.
How was this patch tested?
I ran the query I attached to the ticket on local machine.