[jira] [Created] (FLINK-14621) Do not generate watermark assigner operator if no time attribute operations on rowtime

[Shang Yuanchun (Jira)]

Jark Wu created FLINK-14621:
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             Summary: Do not generate watermark assigner operator if no time attribute operations on rowtime
                 Key: FLINK-14621
                 URL: https://issues.apache.org/jira/browse/FLINK-14621
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Planner
            Reporter: Jark Wu


Currently, if watermark is specified in DDL, there is always a watermark assigner operator generated. However, it is only needed when time attribute operations (e.g. windows) on the rowtime.



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