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https://issues.apache.org/jira/browse/HIVE-3891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13590233#comment-13590233
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Namit Jain commented on HIVE-3891:
----------------------------------

I didn't understand your case.

A join B on A.key = B.key join C on A.key = C.key

or

A join B on A.key = B.key join C on A.value = C.value
                
> physical optimizer changes for auto sort-merge join
> ---------------------------------------------------
>
>                 Key: HIVE-3891
>                 URL: https://issues.apache.org/jira/browse/HIVE-3891
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>         Attachments: auto_sortmerge_join_1.q, auto_sortmerge_join_1.q.out, 
> hive.3891.1.patch, hive.3891.2.patch, hive.3891.3.patch, hive.3891.4.patch, 
> hive.3891.5.patch, hive.3891.6.patch, hive.3891.7.patch
>
>


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