Github user ajithme commented on the issue:
https://github.com/apache/spark/pull/22277
I see. But the code modified in this PR is when alias is part of
projection. The query mention by you seems not to hit the current alias logic @
__org.apache.spark.sql.catalyst.plans.logical.UnaryNode#getAliasedConstraints__
as for outer query __a__ and __c__ as not aliases but rather
AttributeReferences.
Do you mean we should cover the scenario where alias is referenced in
filter as part of this PR.?
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