Reynold Xin created SPARK-19598:
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Summary: Remove the alias parameter in UnresolvedRelation
Key: SPARK-19598
URL: https://issues.apache.org/jira/browse/SPARK-19598
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.2.0
Reporter: Reynold Xin
UnresolvedRelation has a second argument named "alias", for assigning the
relation an alias. I think we can actually remove it and replace its use with a
SubqueryAlias.
This would actually simplify some analyzer code to only match on SubqueryAlias.
For example, the broadcast hint pull request can have one fewer case
https://github.com/apache/spark/pull/16925/files.
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