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https://issues.apache.org/jira/browse/IGNITE-7167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Valentin Kulichenko closed IGNITE-7167.
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> Optimize 'select count(*) from Table'
> -------------------------------------
>
> Key: IGNITE-7167
> URL: https://issues.apache.org/jira/browse/IGNITE-7167
> Project: Ignite
> Issue Type: Improvement
> Components: sql
> Affects Versions: 2.3
> Reporter: Valentin Kulichenko
> Priority: Major
>
> Currently query like {{select count(*) from Table}} effectively scans the
> cache and take a lot of time for large datasets. Probably makes sense to
> optimize it to use {{IgniteCache#size}} directly when possible.
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