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Posted to issues@flink.apache.org by "Kurt Young (Jira)" <ji...@apache.org> on 2019/11/19 03:27:00 UTC

[jira] [Closed] (FLINK-14789) extends max/min type in ColumnStats from Number to Comparable

     [ https://issues.apache.org/jira/browse/FLINK-14789?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kurt Young closed FLINK-14789.
------------------------------
    Resolution: Fixed

fixed in 1.10.0: 7b64ebf56c6141ef9922a2bf94b96f978e51428c

> extends max/min type in ColumnStats from Number to Comparable
> -------------------------------------------------------------
>
>                 Key: FLINK-14789
>                 URL: https://issues.apache.org/jira/browse/FLINK-14789
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / Planner
>            Reporter: godfrey he
>            Assignee: godfrey he
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.10.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Many tpc-ds queries have predicates on date, like {{d_date between '1999-02-01' and (cast('1999-02-01' as date) + INTERVAL '60' day)}}, It's very useful to find a better plan if the planner knows the max/min values of date. However, max/min in {{ColumnStats}} only support {{Number}} type currently. This issue aims to extend max/min type from {{Number}} to {{Comparable}}, and then {{Date}}, {{Time}}, {{Timestamp}} even {{String}} could be supported.



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