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https://issues.apache.org/jira/browse/FLINK-8688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16368913#comment-16368913
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ASF GitHub Bot commented on FLINK-8688:
---------------------------------------

Github user aljoscha closed the pull request at:

    https://github.com/apache/flink/pull/5502


> Enable distinct aggregation for data stream on Table/SQL API
> ------------------------------------------------------------
>
>                 Key: FLINK-8688
>                 URL: https://issues.apache.org/jira/browse/FLINK-8688
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Rong Rong
>            Assignee: Rong Rong
>            Priority: Major
>
> Distinct aggregation is not currently supported on data stream with Table/SQL 
> API. This is an umbrella task for enabling distinct aggregation in various 
> use cases.
> Discussion doc can be found here: 
> https://docs.google.com/document/d/1zj6OA-K2hi7ah8Fo-xTQB-mVmYfm6LsN2_NHgTCVmJI/edit?usp=sharing
>  
> Distinct aggregation is a very important feature in SQL processing and there 
> are many JIRAs currently open with various use cases. The goal is to create 
> one solution to both unbounded and bounded distinct aggregation on data 
> stream so that it can easily be extended to support these use cases.



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