[jira] [Updated] (IGNITE-13919) Calcite integration. Single group aggregates

["Yury Gerzhedovich (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-13919?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yury Gerzhedovich updated IGNITE-13919:
---------------------------------------
    Labels: calcite2-required calcite3-required  (was: )

> Calcite integration. Single group aggregates
> --------------------------------------------
>
>                 Key: IGNITE-13919
>                 URL: https://issues.apache.org/jira/browse/IGNITE-13919
>             Project: Ignite
>          Issue Type: Improvement
>          Components: sql
>            Reporter: Taras Ledkov
>            Priority: Major
>              Labels: calcite2-required, calcite3-required
>
> Investigate the optimization for single group aggregates,
> e.g.: {{SELECT <aggregates> FROM <table>}}
> Now the hash based aggregates are used for this case. 
> We can obtain a little performance improvement.
> Also the special cases (e.g.: {{SELECT COUNT(<any-columns>) FROM <table>}}) may be optimized to use table/cache size.



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