[jira] [Commented] (CALCITE-2879) Improve filter condition in Join

["yuqi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-2879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16879195#comment-16879195 ] 

yuqi commented on CALCITE-2879:
-------------------------------

(y), Indeed, this is a duplication of rule JoinPushTransitivePredicatesRule. i will close this issue later

> Improve filter condition in Join
> --------------------------------
>
>                 Key: CALCITE-2879
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2879
>             Project: Calcite
>          Issue Type: Improvement
>            Reporter: yuqi
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> Currently, filter condition in join have not been optimized very well, let's take a simple example
> {code:sql}
> select a.id, b.name from Ta a inner join Tb b on a.id = b.id and a.id < 5;
> {code}
> now, only a.id < 5 can push down, however, as for the sql above,  
> we can infer a.id < 5 and b.id < 5 and both of them can push down. 



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)