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Posted to issues@spark.apache.org by "Apache Spark (Jira)" <ji...@apache.org> on 2022/05/21 15:26:00 UTC

[jira] [Commented] (SPARK-39249) Improve subexpression elimination for conditional expressions

    [ https://issues.apache.org/jira/browse/SPARK-39249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17540444#comment-17540444 ] 

Apache Spark commented on SPARK-39249:
--------------------------------------

User 'WangGuangxin' has created a pull request for this issue:
https://github.com/apache/spark/pull/36626

> Improve subexpression elimination for conditional expressions
> -------------------------------------------------------------
>
>                 Key: SPARK-39249
>                 URL: https://issues.apache.org/jira/browse/SPARK-39249
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.4.0
>            Reporter: EdisonWang
>            Priority: Minor
>
> Currently we can do subexpression elimination for conditional expressions when the subexpression is common across all {{{}branchGroups{}}}. In fact, we can farther improve this when there are common expressions between {{alwaysEvaluatedInputs}} and {{{}branchGroups{}}}.



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