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From "Gengliang Wang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-25305) Respect attribute name in `CollapseProject`
Date Sat, 01 Sep 2018 16:44:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-25305?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gengliang Wang updated SPARK-25305:
-----------------------------------
    Description: 
Currently in optimizer rule `CollapseProject`, the lower level project is collapsed into upper
level, but the naming of alias in lower level is propagated in upper level.
We should reserve all the output names in upper level.

See PR description of https://github.com/apache/spark/pull/22311 for details.

  was:
Currently in optimizer rule `CollapseProject`, the lower level project is collapsed into upper
level, but the naming of alias in lower level is propagated in upper level.
We should reserve all the output names in upper level.


> Respect attribute name in `CollapseProject`
> -------------------------------------------
>
>                 Key: SPARK-25305
>                 URL: https://issues.apache.org/jira/browse/SPARK-25305
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Gengliang Wang
>            Priority: Major
>
> Currently in optimizer rule `CollapseProject`, the lower level project is collapsed into
upper level, but the naming of alias in lower level is propagated in upper level.
> We should reserve all the output names in upper level.
> See PR description of https://github.com/apache/spark/pull/22311 for details.



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