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Posted to issues@spark.apache.org by "XiDuo You (Jira)" <ji...@apache.org> on 2023/02/21 03:29:00 UTC

[jira] [Updated] (SPARK-42504) NestedColumnAliasing support pruning adjacent projects

     [ https://issues.apache.org/jira/browse/SPARK-42504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

XiDuo You updated SPARK-42504:
------------------------------
    Description: 
CollapseProject won't combine adjacent projects into one, e.g. non-cheap expression has been accessed more than once with the below project. Then there would be possible to appear some adjacent project nodes that NestedColumnAliasing does not support pruning.



  was:
CollapseProject won't combine adjacent projects into one, e.g. non-cheap expression has been accessed more than once with the below project.



> NestedColumnAliasing support pruning adjacent projects
> ------------------------------------------------------
>
>                 Key: SPARK-42504
>                 URL: https://issues.apache.org/jira/browse/SPARK-42504
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.5.0
>            Reporter: XiDuo You
>            Priority: Major
>
> CollapseProject won't combine adjacent projects into one, e.g. non-cheap expression has been accessed more than once with the below project. Then there would be possible to appear some adjacent project nodes that NestedColumnAliasing does not support pruning.



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