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Posted to issues@spark.apache.org by "Wenchen Fan (Jira)" <ji...@apache.org> on 2025/03/05 05:19:00 UTC

[jira] [Resolved] (SPARK-51385) Normalize out projection added in DeduplicateRelations for union child output deduplication

     [ https://issues.apache.org/jira/browse/SPARK-51385?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-51385.
---------------------------------
    Fix Version/s: 4.1.0
       Resolution: Fixed

Issue resolved by pull request 50148
[https://github.com/apache/spark/pull/50148]

> Normalize out projection added in DeduplicateRelations for union child output deduplication
> -------------------------------------------------------------------------------------------
>
>                 Key: SPARK-51385
>                 URL: https://issues.apache.org/jira/browse/SPARK-51385
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 4.1.0
>            Reporter: Vladimir Golubev
>            Assignee: Vladimir Golubev
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.1.0
>
>
> This is a legacy way to deduplicate relations (just cover the duplicates with new Aliases). The single-pass Analyzer does not produce it, because we correctly assign expression IDs in single-pass.



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