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https://issues.apache.org/jira/browse/IMPALA-12736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Rozsa resolved IMPALA-12736.
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Resolution: Implemented
> Backend changes for MERGE statement
> -----------------------------------
>
> Key: IMPALA-12736
> URL: https://issues.apache.org/jira/browse/IMPALA-12736
> Project: IMPALA
> Issue Type: Sub-task
> Components: Backend
> Reporter: Peter Rozsa
> Assignee: Peter Rozsa
> Priority: Major
> Labels: impala-iceberg
>
> * Merge operator
> ** duplicate check
> ** matching WHEN MATCHED/WHEN NOT MATCHED clauses to the underlying rows
> * Merge sink
> ** based on UPDATE statement
> ** dispatching 3 cases:
> *** delete-write
> *** delete
> *** write
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