Peter Rozsa created IMPALA-12736:
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Summary: 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
* 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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