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Commit 091f6a78 authored by Sameer Agarwal's avatar Sameer Agarwal Committed by Michael Armbrust
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[SPARK-13091][SQL] Rewrite/Propagate constraints for Aliases 

This PR adds support for rewriting constraints if there are aliases in the query plan. For e.g., if there is a query of form `SELECT a, a AS b`, any constraints on `a` now also apply to `b`.

JIRA: https://issues.apache.org/jira/browse/SPARK-13091

cc marmbrus

Author: Sameer Agarwal <sameer@databricks.com>

Closes #11144 from sameeragarwal/alias.
parent 14844118
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