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