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Posted to issues@flink.apache.org by "Jark Wu (Jira)" <ji...@apache.org> on 2020/07/31 10:35:00 UTC
[jira] [Created] (FLINK-18784) Push Projection through
WatermarkAssigner
Jark Wu created FLINK-18784:
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Summary: Push Projection through WatermarkAssigner
Key: FLINK-18784
URL: https://issues.apache.org/jira/browse/FLINK-18784
Project: Flink
Issue Type: Sub-task
Components: Table SQL / Planner
Reporter: Jark Wu
Fix For: 1.12.0
Currently, a projection on a watermark table can't push the projection into the source, this is because the projection can't be pushed down throgh watermark node.
{code:java}
Calc(select=[a, b, rowtime])
: +- WatermarkAssigner(rowtime=[rowtime], watermark=[rowtime])
: +- Calc(select=[a, b, c, PROCTIME() AS proctime, rowtime])
: +- TableSourceScan(table=[[default_catalog, default_database, wmTable1]], fields=[a, b, c, rowtime])
{code}
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