[jira] [Created] (FLINK-21675) Push filter into the scan when watermark assigner is the parent of the table scan

[Shang Yuanchun (Jira)]

Shengkai Fang created FLINK-21675:
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             Summary: Push filter into the scan when watermark assigner is the parent of the table scan
                 Key: FLINK-21675
                 URL: https://issues.apache.org/jira/browse/FLINK-21675
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / Planner
            Reporter: Shengkai Fang


When watermark assigner is the parent of the table scan, it will block rule to apply the filter push down. We can add a rule just like {{ProjectWatermarkAssignerTransposeRule}} or extend the rule like {{PushWatermarkIntoTableSourceScanAcrossCalcRule}} and {{PushWatermarkIntoTableSourceScanRule}}.



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