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https://issues.apache.org/jira/browse/HIVE-10555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aihua Xu reassigned HIVE-10555:
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Assignee: Aihua Xu
> Windowing function for count(*) with preceding rows doesn't work as expected
> ----------------------------------------------------------------------------
>
> Key: HIVE-10555
> URL: https://issues.apache.org/jira/browse/HIVE-10555
> Project: Hive
> Issue Type: Bug
> Components: PTF-Windowing
> Affects Versions: 1.3.0
> Reporter: Aihua Xu
> Assignee: Aihua Xu
>
> The following windowing function always returns 0 for count(*).
> {noformat}
> Table t1
> key value
> 1 3
> 1 3
> 1 2
> select key, count(*) over (partition by key order by value rows between 1
> preceding and 2 preceding) from t1;
> {noformat}
> Seems windowing functions have some issues when dealing with preceding window.
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