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Date: Wed, 16 Mar 2016 13:13:33 +0000 (UTC)
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 <JIRA.12944367.1456369220677@arcas>
Subject: [jira] [Commented] (FLINK-3503) ProjectJoinTransposeRule fails to
 push down project.
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    [ https://issues.apache.org/jira/browse/FLINK-3503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15197279#comment-15197279 ] 

ASF GitHub Bot commented on FLINK-3503:
---------------------------------------

Github user vasia commented on the pull request:

    https://github.com/apache/flink/pull/1798#issuecomment-197321103
  
    Merging this one too.


> ProjectJoinTransposeRule fails to push down project.
> ----------------------------------------------------
>
>                 Key: FLINK-3503
>                 URL: https://issues.apache.org/jira/browse/FLINK-3503
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API
>            Reporter: Chengxiang Li
>            Priority: Minor
>
> {noformat}
>     val ds1 = CollectionDataSets.getSmall3TupleDataSet(env).as('a, 'b, 'c)
>     val ds2 = CollectionDataSets.get5TupleDataSet(env).as('d, 'e, 'f, 'g, 'h)
>     val joinT = ds1.join(ds2).where('b === 'e).select('c, 'g)
> {noformat}
> For this query, ProjectJoinTransposeRule should pushes a Project past a Join by splitting the projection into a projection on top of each child of the join.


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