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Posted to issues@calcite.apache.org by "Stamatis Zampetakis (JIRA)" <ji...@apache.org> on 2019/02/05 07:24:00 UTC

[jira] [Commented] (CALCITE-2819) Add a version of LoptOptimizeJoinRule that uses the first ordering it finds

    [ https://issues.apache.org/jira/browse/CALCITE-2819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16760531#comment-16760531 ] 

Stamatis Zampetakis commented on CALCITE-2819:
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Hi [~siddteotia], I am wondering about the benefit of adding such rule. You already have an ordering before applying this rule so the first ordering of the rule is the second ordering overall. Why is this second join ordering in particular useful?

> Add a version of LoptOptimizeJoinRule that uses the first ordering it finds
> ---------------------------------------------------------------------------
>
>                 Key: CALCITE-2819
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2819
>             Project: Calcite
>          Issue Type: Task
>          Components: core
>            Reporter: Siddharth Teotia
>            Assignee: Julian Hyde
>            Priority: Minor
>




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