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Posted to commits@cayenne.apache.org by "Nikita Timofeev (Jira)" <ji...@apache.org> on 2020/10/09 18:22:00 UTC

[jira] [Closed] (CAY-2683) Don't use DISTINCT for joins on to-one related tables

     [ https://issues.apache.org/jira/browse/CAY-2683?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nikita Timofeev closed CAY-2683.
--------------------------------
    Resolution: Fixed

https://github.com/apache/cayenne/commit/d5dde6af44489ce8de7fca136eba1db358e073db

> Don't use DISTINCT for joins on to-one related tables
> -----------------------------------------------------
>
>                 Key: CAY-2683
>                 URL: https://issues.apache.org/jira/browse/CAY-2683
>             Project: Cayenne
>          Issue Type: Improvement
>          Components: Core Library
>    Affects Versions: 4.2.M1, 4.2.M2
>            Reporter: Nikita Timofeev
>            Assignee: Nikita Timofeev
>            Priority: Minor
>             Fix For: 4.2.M3
>
>
> New {{SelectTranslator}} introduced in CAY-2465 uses {{DISTINCT}} by default for all queries that have at least one join. This could lead to some performance issues. Moreover, this logic differs from the old translator.



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