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https://issues.apache.org/jira/browse/FLINK-23054?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nico Kruber updated FLINK-23054:
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Parent: FLINK-20374
Issue Type: Sub-task (was: Bug)
> Correct upsert optimization by upsert keys
> ------------------------------------------
>
> Key: FLINK-23054
> URL: https://issues.apache.org/jira/browse/FLINK-23054
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Runtime
> Reporter: Jingsong Lee
> Assignee: Jingsong Lee
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.14.0
>
>
> After FLINK-22901.
> We can use upsert keys to fix upsert join, upsert rank, and upsert sink.
> * For join and rank: if input has no upsert keys, do not use upsert
> optimization.
> * For upsert sink: if input has unique keys but no upsert keys, we need add
> a materialize operator to produce upsert records.
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