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https://issues.apache.org/jira/browse/CALCITE-1362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16389541#comment-16389541
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Vitalii Diravka commented on CALCITE-1362:
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[~jcamachorodriguez] is right, the above works good in Drill too.
[~ustcw...@hotmail.com] Is this still an issue for you?

> Filter aboved Join should consider the join key equivalence to push through 
> ----------------------------------------------------------------------------
>
>                 Key: CALCITE-1362
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1362
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: wei lin
>            Assignee: Julian Hyde
>            Priority: Major
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> currently the FilterIntoJoinRule does not consider the join key equivalence. 
> we should consider that and push more condition into children. i will do it 
> and provide the patch later. 



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