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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-14943) Base Implementation
Date Sat, 05 Nov 2016 03:20:59 GMT

    [ https://issues.apache.org/jira/browse/HIVE-14943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15638474#comment-15638474
] 

Eugene Koifman commented on HIVE-14943:
---------------------------------------

The AND <boolean expr> in WHEN is unrestricted

The implementation ensures that every row can only go down one branch by appending AND NOT
X to the 2nd WHEN MATCHED clause  where X is the AND X of previous WHEN MATCHED.  That is
why it's required.

VALUES is required by the standard.  

I don't plan to add .q tests except perhaps to test Tez when things are nearing completion.


> Base Implementation
> -------------------
>
>                 Key: HIVE-14943
>                 URL: https://issues.apache.org/jira/browse/HIVE-14943
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Transactions
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>         Attachments: HIVE-14943.2.patch, HIVE-14943.3.patch, HIVE-14943.4.patch, HIVE-14943.5.patch,
HIVE-14943.6.patch, HIVE-14943.7.patch, HIVE-14943.8.patch, HIVE-14943.9.patch, HIVE-14943.patch
>
>
> Create the 1st pass functional implementation of MERGE
> This should run e2e and produce correct results.  



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