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https://issues.apache.org/jira/browse/SPARK-17034?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15423376#comment-15423376
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Apache Spark commented on SPARK-17034:
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User 'petermaxlee' has created a pull request for this issue:
https://github.com/apache/spark/pull/14672
> Ordinal in ORDER BY or GROUP BY should be treated as an unresolved expression
> -----------------------------------------------------------------------------
>
> Key: SPARK-17034
> URL: https://issues.apache.org/jira/browse/SPARK-17034
> Project: Spark
> Issue Type: Bug
> Reporter: Sean Zhong
> Assignee: Sean Zhong
> Fix For: 2.1.0
>
>
> Ordinals in GROUP BY or ORDER BY like "1" in "order by 1" or "group by 1"
> should be considered as unresolved before analysis. But in current code, it
> uses "Literal" expression to store the ordinal. This is inappropriate as
> "Literal" itself is a resolved expression, it gives the user a wrong message
> that the ordinals has already been resolved.
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