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https://issues.apache.org/jira/browse/HIVE-10924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15027546#comment-15027546
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Eugene Koifman commented on HIVE-10924:
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One more to think about:
In a multi-insert, we have multiple MoveTasks
see MoveTask.releaseLocks()
> add support for MERGE statement
> -------------------------------
>
> Key: HIVE-10924
> URL: https://issues.apache.org/jira/browse/HIVE-10924
> Project: Hive
> Issue Type: New Feature
> Components: Query Planning, Query Processor, Transactions
> Affects Versions: 1.2.0
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
>
> add support for
> MERGE INTO tbl USING src ON … WHEN MATCHED THEN ... WHEN NOT MATCHED THEN ...
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