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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:
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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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