David Anderson created FLINK-22737:
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Summary: Add support for CURRENT_WATERMARK to SQL
Key: FLINK-22737
URL: https://issues.apache.org/jira/browse/FLINK-22737
Project: Flink
Issue Type: Sub-task
Components: Table SQL / API
Reporter: David Anderson
With a built-in function returning the current watermark, one could operate on
late events without resorting to using the DataStream API.
Called with zero parameters, this function returns the current watermark for
the current row – if there is an event time attribute. Otherwise, it returns
NULL.
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