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Posted to issues@flink.apache.org by "Rong Rong (JIRA)" <ji...@apache.org> on 2018/02/18 16:11:00 UTC

[jira] [Created] (FLINK-8688) Enable distinct aggregation for data stream on Table/SQL API

Rong Rong created FLINK-8688:
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             Summary: 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 &amp; SQL
            Reporter: Rong Rong
            Assignee: Rong Rong


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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