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From "Phabricator (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-3315) Propagates filters which are on the join condition transitively
Date Thu, 27 Sep 2012 07:10:08 GMT

    [ https://issues.apache.org/jira/browse/HIVE-3315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13464510#comment-13464510
] 

Phabricator commented on HIVE-3315:
-----------------------------------

njain has commented on the revision "HIVE-3315 [jira] Propagate filers on inner join condition
transitively".

  looks mostly good - let me review one more time in detail before accepting

REVISION DETAIL
  https://reviews.facebook.net/D4497

To: JIRA, navis
Cc: njain

                
> Propagates filters which are on the join condition transitively 
> ----------------------------------------------------------------
>
>                 Key: HIVE-3315
>                 URL: https://issues.apache.org/jira/browse/HIVE-3315
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>    Affects Versions: 0.10.0
>            Reporter: Navis
>            Assignee: Navis
>            Priority: Minor
>         Attachments: HIVE-3315.1.patch.txt, HIVE-3315.2.patch.txt, HIVE-3315.3.patch.txt,
HIVE-3315.D4497.5.patch, HIVE-3315.D4497.6.patch, HIVE-3315.D4497.7.patch
>
>
> explain select src1.key from src src1 join src src2 on src1.key=src2.key and src1.key
< 100;
> In this case, filter on join condition src1.key < 100 can be propagated transitively
to src2 by src2.key < 100. 

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