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

["Apache Spark (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-33036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17204726#comment-17204726 ] 

Apache Spark commented on SPARK-33036:
--------------------------------------

User 'maropu' has created a pull request for this issue:
https://github.com/apache/spark/pull/29913

> 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
>            Priority: Minor
>
> 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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