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https://issues.apache.org/jira/browse/SPARK-25305?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gengliang Wang updated SPARK-25305:
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Summary: Respect attribute name in `CollapseProject` and `ColumnPruning`
(was: Respect attribute name in `CollapseProject`)
> Respect attribute name in `CollapseProject` and `ColumnPruning`
> ---------------------------------------------------------------
>
> 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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