[jira] [Commented] (CALCITE-3910) Enhance ProjectJoinTransposeRule to support SemiJoin and AntiJoin

["Stamatis Zampetakis (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-3910?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17081801#comment-17081801 ] 

Stamatis Zampetakis commented on CALCITE-3910:
----------------------------------------------

Are you working on this [~Chunwei Lei]? Is {{RelFieldTrimmer}} capable of pushing projects pass semi/anti joins? Can we re-use code?

> Enhance ProjectJoinTransposeRule to support SemiJoin and AntiJoin
> -----------------------------------------------------------------
>
>                 Key: CALCITE-3910
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3910
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.22.0
>            Reporter: Chunwei Lei
>            Priority: Major
>
> Currently, ProjectJoinTransposeRule does not support push project pass SemiJoin and AntiJoin.
> {code:java}
> public void onMatch(RelOptRuleCall call) {
>   Project origProj = call.rel(0);
>   final Join join = call.rel(1);
>   if (!join.getJoinType().projectsRight()) {
>     return; // TODO: support SemiJoin / AntiJoin
>   }
>   ...
>   ...
> }{code}
>  



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