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https://issues.apache.org/jira/browse/HIVE-14945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eugene Koifman updated HIVE-14945:
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Attachment: HIVE-14943.6.patch
patch 6 - support for update and delete in the same merge stmt
> Add support for multiple WHEN MATCHED clauses
> ---------------------------------------------
>
> Key: HIVE-14945
> URL: https://issues.apache.org/jira/browse/HIVE-14945
> Project: Hive
> Issue Type: Sub-task
> Components: Transactions
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Attachments: HIVE-14943.6.patch
>
>
> Different vendors have different rules.
> HIVE-14943 only allows 1 WHEN MATCHED clause
> IBM Allows > 1 WHEN MATCHED clause
> https://www.ibm.com/support/knowledgecenter/SSEPGG_9.5.0/com.ibm.db2.luw.sql.ref.doc/doc/r0010873.html
> So does SQL Server https://msdn.microsoft.com/en-us/library/bb510625.aspx
> everyone seems to support update/delete/insert - in that order
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