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Posted to issues@calcite.apache.org by "Ruben Q L (Jira)" <ji...@apache.org> on 2020/06/04 15:23:00 UTC

[jira] [Resolved] (CALCITE-4042) JoinCommuteRule must not match SEMI / ANTI join

     [ https://issues.apache.org/jira/browse/CALCITE-4042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ruben Q L resolved CALCITE-4042.
--------------------------------
    Resolution: Fixed

Done via https://github.com/apache/calcite/commit/721ac8c21fb3a33dc85e677434ec7d716f9aa509

> JoinCommuteRule must not match SEMI / ANTI join
> -----------------------------------------------
>
>                 Key: CALCITE-4042
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4042
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.23.0
>            Reporter: Ruben Q L
>            Assignee: Ruben Q L
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 1.24.0
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> JoinCommuteRule must not match SEMI / ANTI join, because these types cannot be swapped.
> This is a minor issue, because the "default" JoinCommuteRule.INSTANCE matches only INNER joins. However, there is another version of the rule (JoinCommuteRule.SWAP_OUTER, currently only used in a few unit tests), to match also outer joins, which could potentially match a SEMI / ANTI join.



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