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Posted to issues@calcite.apache.org by "Julian Hyde (JIRA)" <ji...@apache.org> on 2015/07/30 23:01:04 UTC

[jira] [Commented] (CALCITE-822) Incorrect LogicalAggregate collation inferring logic was introduced with the patch for CALCITE-783

    [ https://issues.apache.org/jira/browse/CALCITE-822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14648300#comment-14648300 ] 

Julian Hyde commented on CALCITE-822:
-------------------------------------

[~maryannxue] noticed the issue with SUM and $SUM0. They are similar aggregate functions that may both be viable and have the same cost; thus plans will oscillate between SUM and $SUM0. Her patch to CALCITE-793 fixes the issue by making $SUM0 slightly more expensive.

> Incorrect LogicalAggregate collation inferring logic was introduced with the patch for CALCITE-783
> --------------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-822
>                 URL: https://issues.apache.org/jira/browse/CALCITE-822
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>            Reporter: Milinda Lakmal Pathirage
>            Assignee: Milinda Lakmal Pathirage
>         Attachments: CALCITE-822-0.patch
>
>
> Please refer https://issues.apache.org/jira/browse/CALCITE-783?focusedCommentId=14641378&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14641378 for more information.



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