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Posted to issues@calcite.apache.org by "Ruben Q L (Jira)" <ji...@apache.org> on 2020/02/27 09:22:02 UTC

[jira] [Updated] (CALCITE-3833) Support SemiJoin in EnumerableMergeJoin

     [ https://issues.apache.org/jira/browse/CALCITE-3833?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ruben Q L updated CALCITE-3833:
-------------------------------
    Description: 
Currently, {{EnumerableMergeJoin}} only supports INNER joins. The goal of this ticket is to improve this join operator in order to support SEMI joins too.

Note: {{RelMdCollation#mergeJoin}} will need to be modified too: in case of SEMI join, it must return just the {{leftCollations}}.

  was:Currently, EnumerableMergeJoin only supports INNER joins. The goal of this ticket is to improve this join operator in order to support SEMI joins too.


> Support SemiJoin in EnumerableMergeJoin
> ---------------------------------------
>
>                 Key: CALCITE-3833
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3833
>             Project: Calcite
>          Issue Type: New Feature
>          Components: core
>    Affects Versions: 1.21.0
>            Reporter: Ruben Q L
>            Assignee: Ruben Q L
>            Priority: Major
>
> Currently, {{EnumerableMergeJoin}} only supports INNER joins. The goal of this ticket is to improve this join operator in order to support SEMI joins too.
> Note: {{RelMdCollation#mergeJoin}} will need to be modified too: in case of SEMI join, it must return just the {{leftCollations}}.



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