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https://issues.apache.org/jira/browse/FLINK-22737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17354813#comment-17354813
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Ingo Bürk commented on FLINK-22737:
-----------------------------------
Just for completeness, this is how the SQL client will render MIN_VALUE. I
can't say I'm a fan of it, but if we allow a date 300 million years in the
past, this will have to be fixed. :)
!screenshot-2021-05-31_14-22-43.png!
> 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
> Assignee: Ingo Bürk
> Priority: Major
> Attachments: screenshot-2021-05-31_14-22-43.png
>
>
> 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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