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Posted to issues@calcite.apache.org by "Vladimir Sitnikov (Jira)" <ji...@apache.org> on 2021/03/28 17:46:00 UTC

[jira] [Updated] (CALCITE-4557) Sort costing should account the number of sort keys: the more keys to compare, the more the cost

     [ https://issues.apache.org/jira/browse/CALCITE-4557?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vladimir Sitnikov updated CALCITE-4557:
---------------------------------------
    Summary: Sort costing should account the number of sort keys: the more keys to compare, the more the cost  (was: Sort costing should account the number of sort keys: the more keys to compare, the more the cose)

> Sort costing should account the number of sort keys: the more keys to compare, the more the cost
> ------------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-4557
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4557
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.26.0
>            Reporter: Vladimir Sitnikov
>            Priority: Major
>
> Current costing for sort does not account for the number of keys in the comparison function which might result in worse plan selection.



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