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https://issues.apache.org/jira/browse/FLINK-10978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17334066#comment-17334066
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Flink Jira Bot commented on FLINK-10978:
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This issue was marked "stale-assigned" and has not received an update in 7
days. It is now automatically unassigned. If you are still working on it, you
can assign it to yourself again. Please also give an update about the status of
the work.
> Add FlatAggregate operator to batch Table API
> ---------------------------------------------
>
> Key: FLINK-10978
> URL: https://issues.apache.org/jira/browse/FLINK-10978
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / API
> Reporter: sunjincheng
> Assignee: Hequn Cheng
> Priority: Major
> Labels: stale-assigned
>
> Add FlatAggregate operator to batch Table API as described in [Google
> doc|https://docs.google.com/document/d/1tnpxg31EQz2-MEzSotwFzqatsB4rNLz0I-l_vPa5H4Q/edit#heading=h.q23rny2iglsr]
> .
> The usage:
> {code:java}
> val res = tab
> .groupBy('a) // leave out groupBy-clause to define global table aggregates
> .flatAgg(fun: TableAggregateFunction) // output has columns 'a, 'b, 'c
> .select('a, 'c)
> {code}
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