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https://issues.apache.org/jira/browse/FLINK-24547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17429892#comment-17429892
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jocean.shi commented on FLINK-24547:
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Actually, It's meaningless and hard to explain in this case, but in some other
case it's useful . this function is not useful for every case, but only is
useful for some special case.
Users using this function means they know the "RowKind" mechanism and what they
want to do.
> A function named row_kind() can get row_kind
> --------------------------------------------
>
> Key: FLINK-24547
> URL: https://issues.apache.org/jira/browse/FLINK-24547
> Project: Flink
> Issue Type: New Feature
> Components: Table SQL / Planner
> Reporter: jocean.shi
> Priority: Not a Priority
> Labels: pull-request-available
> Fix For: 1.15.0
>
>
> Add a function can get row_kind. In many case we need cdc data rowKind, such
> as agg rowKind or filter some rowKind data, the function return
> "+I","-U","+U","-D",
> you can use this function as "select row_kind() as op from xxx".
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