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https://issues.apache.org/jira/browse/CALCITE-4338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17482220#comment-17482220
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Jing Zhang commented on CALCITE-4338:
-------------------------------------
+1 on this feature.
MERGE is also available starting in Hive 2.2. Doc:
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DML#LanguageManualDML-Merge
> Support MERGE INTO Clause
> -------------------------
>
> Key: CALCITE-4338
> URL: https://issues.apache.org/jira/browse/CALCITE-4338
> Project: Calcite
> Issue Type: Improvement
> Reporter: Forward Xu
> Priority: Major
>
> {code:java}
> MERGE INTO target_table
> USING source_table
> ON search_condition
> WHEN MATCHED THEN
> UPDATE SET col1 = value1, col2 = value2,...
> WHERE <update_condition>
> [DELETE WHERE <delete_condition>]
> WHEN NOT MATCHED THEN
> INSERT (col1,col2,...)
> values(value1,value2,...)
> WHERE <insert_condition>;
> {code}
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