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https://issues.apache.org/jira/browse/IGNITE-13919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17637297#comment-17637297
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Ignite TC Bot commented on IGNITE-13919:
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{panel:title=Branch: [pull/10390/head] Base: [master] : No blockers
found!|borderStyle=dashed|borderColor=#ccc|titleBGColor=#D6F7C1}{panel}
{panel:title=Branch: [pull/10390/head] Base: [master] : New Tests
(1)|borderStyle=dashed|borderColor=#ccc|titleBGColor=#D6F7C1}
{color:#00008b}Calcite SQL{color} [[tests
1|https://ci2.ignite.apache.org/viewLog.html?buildId=6920787]]
* {color:#013220}IgniteCalciteTestSuite:
AggregatesIntegrationTest.testCountIndexedField - PASSED{color}
{panel}
[TeamCity *--> Run :: All*
Results|https://ci2.ignite.apache.org/viewLog.html?buildId=6920867&buildTypeId=IgniteTests24Java8_RunAll]
> 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
> Assignee: Aleksey Plekhanov
> Priority: Minor
> Labels: calcite2-required, calcite3-required
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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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