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https://issues.apache.org/jira/browse/FLINK-39314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18068264#comment-18068264
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Xuyang Zhong commented on FLINK-39314:
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Merged into master: 2e49048680e452c3d0ecb981fe3e4fd685d6aacf
> Filter on any upsert key group is sufficient to discard update before in
> FlinkChangelogModeInferenceProgram
> -----------------------------------------------------------------------------------------------------------
>
> Key: FLINK-39314
> URL: https://issues.apache.org/jira/browse/FLINK-39314
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Reporter: Xuyang Zhong
> Assignee: Xuyang Zhong
> Priority: Major
> Fix For: 2.3.0
>
>
> Currently, we only check whether the input references in the filter are
> within the first upsert key.
>
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