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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2018/07/27 23:56:00 UTC

[jira] [Commented] (SPARK-24953) Prune a branch in `CaseWhen` if previously seen

    [ https://issues.apache.org/jira/browse/SPARK-24953?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16560498#comment-16560498 ] 

Apache Spark commented on SPARK-24953:
--------------------------------------

User 'dbtsai' has created a pull request for this issue:
https://github.com/apache/spark/pull/21904

> Prune a branch in `CaseWhen` if previously seen
> -----------------------------------------------
>
>                 Key: SPARK-24953
>                 URL: https://issues.apache.org/jira/browse/SPARK-24953
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.3.0
>            Reporter: DB Tsai
>            Priority: Major
>
> If a condition in a branch is previously seen, this branch can be pruned.
> If the outputs of two adjacent branches are the same, two branches can be combined.



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