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https://issues.apache.org/jira/browse/FLINK-3567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15179819#comment-15179819
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ASF GitHub Bot commented on FLINK-3567:
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Github user twalthr commented on the pull request:
https://github.com/apache/flink/pull/1761#issuecomment-192259728
Looks good to merge (besides a small comment).
> Rework selection when grouping in Table API
> -------------------------------------------
>
> Key: FLINK-3567
> URL: https://issues.apache.org/jira/browse/FLINK-3567
> Project: Flink
> Issue Type: Bug
> Components: Table API
> Reporter: Timo Walther
> Assignee: Fabian Hueske
>
> {code}table.groupBy("a").select("e"){code}
> does not throw any exception.
> Fabian looked at the implementation of GroupedTable.select() and it looks
> incorrect. It does not group but just add a selection. Either we should
> reject the select or select the value an arbitrary row of the group.
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