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https://issues.apache.org/jira/browse/IGNITE-18464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Evgeny Stanilovsky reassigned IGNITE-18464:
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Assignee: Evgeny Stanilovsky
> Sql. Colocated sort aggregates need to compose a plans with additional sort
> if no appropriate index is available.
> ------------------------------------------------------------------------------------------------------------------
>
> Key: IGNITE-18464
> URL: https://issues.apache.org/jira/browse/IGNITE-18464
> Project: Ignite
> Issue Type: Improvement
> Components: sql
> Affects Versions: 3.0.0-beta1
> Reporter: Evgeny Stanilovsky
> Assignee: Evgeny Stanilovsky
> Priority: Major
> Labels: calcite, ignite-3
>
> For now requests like :
> {noformat}
> SELECT COUNT(DISTINCT val0) FROM test{noformat}
> Can`t be planned through SortAggregates,
> ("ColocatedHashAggregateConverterRule",
> "MapReduceHashAggregateConverterRule") - need to be disabled.
> But seems we need to obtain smth like :
> {noformat}
> IgniteProject
> IgniteReduceSortAggregate
> IgniteExchange
> IgniteMapSortAggregate
> IgniteSort <-?
> IgniteTableScan{noformat}
> Seems map aggregate not require sorted input or smth about it.
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