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Posted to issues@spark.apache.org by "Karen Feng (Jira)" <ji...@apache.org> on 2021/02/26 20:22:00 UTC

[jira] [Commented] (SPARK-34555) Resolve metadata output

    [ https://issues.apache.org/jira/browse/SPARK-34555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17291906#comment-17291906 ] 

Karen Feng commented on SPARK-34555:
------------------------------------

I'm working on this.

> Resolve metadata output
> -----------------------
>
>                 Key: SPARK-34555
>                 URL: https://issues.apache.org/jira/browse/SPARK-34555
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.1.0
>            Reporter: Karen Feng
>            Priority: Minor
>
> Today, we can't resolve a metadata column from a Spark dataframe from Scala with {{df.col("metadataColName")}}. This is because metadata output is only used during {{resolveChildren}} (used during SQL resolution); it should likely also be used by {{resolve}} (used during Scala resolution).



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