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https://issues.apache.org/jira/browse/FLINK-5315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15741512#comment-15741512
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Fabian Hueske commented on FLINK-5315:
--------------------------------------

Once FLINK-3475 has been resolved, this issue can be addressed by extending the 
Table API with an distinct keyword and implementing the validation and 
translation into a RelNode plan.

> Support distinct aggregations in table api
> ------------------------------------------
>
>                 Key: FLINK-5315
>                 URL: https://issues.apache.org/jira/browse/FLINK-5315
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table API & SQL
>            Reporter: Kurt Young
>
> Such as 
> {code}
> t.select("count(distinct a), sum(b)")
> {code}
> or 
> {code}
> t.select('a.count.distinct), 'b.sum)
> {code}



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