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From "Aihua Xu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-10555) Windowing function for count(*) with preceding rows doesn't work as expected
Date Thu, 30 Apr 2015 15:35:06 GMT

     [ https://issues.apache.org/jira/browse/HIVE-10555?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aihua Xu updated HIVE-10555:
----------------------------
    Description: 
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.



  was:
The following windowing function always returns 0 for count(*). 

{noformat}
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.




> 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
>
> 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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