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Posted to issues@flink.apache.org by "Jark Wu (Jira)" <ji...@apache.org> on 2021/05/21 08:05:00 UTC

[jira] [Commented] (FLINK-22737) Add support for CURRENT_WATERMARK to SQL

    [ https://issues.apache.org/jira/browse/FLINK-22737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17349061#comment-17349061 ] 

Jark Wu commented on FLINK-22737:
---------------------------------

Sounds make sense to me. 

> 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
>            Priority: Major
>
> 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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