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https://issues.apache.org/jira/browse/SPARK-21043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16045773#comment-16045773
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Takeshi Yamamuro commented on SPARK-21043:
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Thank you for ping me! Yea, I'll try
> Add unionByName API to Dataset
> ------------------------------
>
> Key: SPARK-21043
> URL: https://issues.apache.org/jira/browse/SPARK-21043
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Reynold Xin
>
> It would be useful to add unionByName which resolves columns by name, in
> addition to the existing union (which resolves by position).
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