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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2018/07/23 19:19:00 UTC

[jira] [Commented] (SPARK-24893) Remove the entire CaseWhen if all the outputs are semantic equivalence

    [ https://issues.apache.org/jira/browse/SPARK-24893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16553286#comment-16553286 ] 

Apache Spark commented on SPARK-24893:
--------------------------------------

User 'dbtsai' has created a pull request for this issue:
https://github.com/apache/spark/pull/21852

> Remove the entire CaseWhen if all the outputs are semantic equivalence
> ----------------------------------------------------------------------
>
>                 Key: SPARK-24893
>                 URL: https://issues.apache.org/jira/browse/SPARK-24893
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.3.0
>            Reporter: DB Tsai
>            Assignee: DB Tsai
>            Priority: Major
>
> Similar to [SPARK-24890], if all the outputs of `CaseWhen` are semantic equivalence, `CaseWhen` can be removed.



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