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Posted to dev@flink.apache.org by "Kurt Young (Jira)" <ji...@apache.org> on 2020/03/06 14:09:00 UTC

[jira] [Created] (FLINK-16466) Group by on event time should produce insert only result

Kurt Young created FLINK-16466:
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             Summary: Group by on event time should produce insert only result
                 Key: FLINK-16466
                 URL: https://issues.apache.org/jira/browse/FLINK-16466
             Project: Flink
          Issue Type: Improvement
          Components: Table SQL / Planner
    Affects Versions: 1.10.0
            Reporter: Kurt Young


Currently when doing aggregation queries, we can output insert only results only when grouping by windows. But when users defined event time and also watermark, we can also support emit insert only results when grouping on event time. To be more precise, it should only require event time is one of the grouping keys. One can think of grouping by event time is kind of a special window, with both window start and window end equals to event time.



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