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Posted to issues@ignite.apache.org by "Alexander Belyak (Jira)" <ji...@apache.org> on 2021/06/29 08:00:00 UTC

[jira] [Commented] (IGNITE-14307) Calcite. Use statistics in cost model.

    [ https://issues.apache.org/jira/browse/IGNITE-14307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17371201#comment-17371201 ] 

Alexander Belyak commented on IGNITE-14307:
-------------------------------------------

[PR|https://github.com/apache/ignite/pull/9205]

> Calcite. Use statistics in cost model.
> --------------------------------------
>
>                 Key: IGNITE-14307
>                 URL: https://issues.apache.org/jira/browse/IGNITE-14307
>             Project: Ignite
>          Issue Type: Improvement
>          Components: sql
>            Reporter: Yury Gerzhedovich
>            Assignee: Alexander Belyak
>            Priority: Critical
>              Labels: calcite2-required, calcite3-required
>
> Currently, we use only table size for the cost model, however as [IEP-58|https://cwiki.apache.org/confluence/display/IGNITE/IEP-58%3A+Statistics+for+SQL+query+optimization] will be implemented we could use it to improve our cost model,



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