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https://issues.apache.org/jira/browse/IGNITE-17250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Steshin updated IGNITE-17250:
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Ignite Flags: Release Notes Required (was: Docs Required,Release Notes
Required)
> Calcite. Make 'min()/max()' use first/last index value.
> -------------------------------------------------------
>
> Key: IGNITE-17250
> URL: https://issues.apache.org/jira/browse/IGNITE-17250
> Project: Ignite
> Issue Type: Improvement
> Reporter: Vladimir Steshin
> Assignee: Vladimir Steshin
> Priority: Major
> Labels: ise
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> Currently, Calcite's plan on min()/max() is the table scan and the
> aggregation n the indexed field:
> {code:sql}
> "select min(salary) from Person"
> {code}
> Plan:
> {code:java}
> IgniteReduceHashAggregate(group=[{}], MAX(SALARY)=[MAX($0)])
> IgniteExchange(distribution=[single])
> IgniteMapHashAggregate(group=[{}], MAX(SALARY)=[MAX($0)])
> IgniteTableScan(table=[[PUBLIC, PERSON]], requiredColumns=[{3}])
> {code}
> We could pick up first index record. No need to scan.
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