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Posted to issues@quickstep.apache.org by "Zuyu Zhang (JIRA)" <ji...@apache.org> on 2017/03/18 08:17:41 UTC

[jira] [Closed] (QUICKSTEP-66) Min/max statistics for table columns

     [ https://issues.apache.org/jira/browse/QUICKSTEP-66?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zuyu Zhang closed QUICKSTEP-66.
-------------------------------
    Resolution: Fixed

> Min/max statistics for table columns
> ------------------------------------
>
>                 Key: QUICKSTEP-66
>                 URL: https://issues.apache.org/jira/browse/QUICKSTEP-66
>             Project: Apache Quickstep
>          Issue Type: Improvement
>          Components: Catalog
>            Reporter: Jianqiao Zhu
>            Assignee: Jianqiao Zhu
>
> The improvement is to collect the min/max statistics for each column of a table with the `\analyze` command.
> The min/max information helps query optimization and is required by some specialized fast-path operators (e.g. exact filters and vector-based aggregation).



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