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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