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Posted to issues@quickstep.apache.org by "Jianqiao Zhu (JIRA)" <ji...@apache.org> on 2016/12/17 00:57:58 UTC
[jira] [Updated] (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 ]
Jianqiao Zhu updated QUICKSTEP-66:
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Description:
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).
was:
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).
> 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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