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https://issues.apache.org/jira/browse/CALCITE-4223?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chunwei Lei resolved CALCITE-4223.
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Fix Version/s: 1.32.0
Resolution: Fixed
Fixed in
https://github.com/apache/calcite/commit/7e0057e8de93930f1b2952a1cbcee8ad7a6bfb4b.
Thank you for your view, [~asolimando]!
> Introducing column statistics to RelOptTable
> --------------------------------------------
>
> Key: CALCITE-4223
> URL: https://issues.apache.org/jira/browse/CALCITE-4223
> Project: Calcite
> Issue Type: Improvement
> Reporter: Chunwei Lei
> Assignee: Chunwei Lei
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.32.0
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> Many systems depend on column statistics to compute more accurate stats, such
> as NDV, average column size, and so on. It would be nice if Calcite can
> provide such an interface.
> Column statistics might include NDV, average/max column length, number of
> nulls, number of trues, number of falses and so on.
> What do you think?
>
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