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From "Wenchen Fan (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-24893) Remove the entire CaseWhen if all the outputs are semantic equivalence
Date Wed, 01 Aug 2018 02:32:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-24893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wenchen Fan resolved SPARK-24893.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 2.4.0

Issue resolved by pull request 21852
[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
>             Fix For: 2.4.0
>
>
> Similar to [SPARK-24890], if all the outputs of `CaseWhen` are semantic equivalence,
`CaseWhen` can be removed.



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