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Posted to issues@spark.apache.org by "Wenchen Fan (Jira)" <ji...@apache.org> on 2021/03/02 09:28:00 UTC

[jira] [Assigned] (SPARK-34547) Resolve using child metadata attributes as fallback

     [ https://issues.apache.org/jira/browse/SPARK-34547?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan reassigned SPARK-34547:
-----------------------------------

    Assignee: Karen Feng

> Resolve using child metadata attributes as fallback
> ---------------------------------------------------
>
>                 Key: SPARK-34547
>                 URL: https://issues.apache.org/jira/browse/SPARK-34547
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.1.0
>            Reporter: Karen Feng
>            Assignee: Karen Feng
>            Priority: Major
>
> Today, child expressions may be resolved based on "real" or metadata output attributes. If a "real" attribute and a metadata attribute have the same name, we should prefer the real one during resolution. This resolution fails today, although the user may not be aware of the metadata.



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