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Posted to issues@spark.apache.org by "Takeshi Yamamuro (Jira)" <ji...@apache.org> on 2020/09/30 13:05:00 UTC

[jira] [Created] (SPARK-33036) Refactor RewriteCorrelatedScalarSubquery code to replace exprIds in a bottom-up manner

Takeshi Yamamuro created SPARK-33036:
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             Summary: Refactor RewriteCorrelatedScalarSubquery code to replace exprIds in a bottom-up manner
                 Key: SPARK-33036
                 URL: https://issues.apache.org/jira/browse/SPARK-33036
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 3.1.0
            Reporter: Takeshi Yamamuro


This PR aims at refactoring code in `RewriteCorrelatedScalarSubquery` for replacing `ExprId`s in a bottom-up manner instead of doing in a top-down one.

This PR comes from the talk with @cloud-fan in https://github.com/apache/spark/pull/29585#discussion_r490371252.



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