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From "Alan Gates (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-4193) OVER clauses with BETWEEN in the window definition produce wrong results
Date Thu, 21 Mar 2013 17:15:16 GMT

     [ https://issues.apache.org/jira/browse/HIVE-4193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alan Gates updated HIVE-4193:
-----------------------------

    Attachment: Range_5_diff

A diff from last night's run for the query:

select i, f, avg(d) over (partition by i order by f desc rows between 5 preceding and 5 following)
from over100k;

Based on the output this doesn't look like a sort stability issue.
                
> OVER clauses with BETWEEN in the window definition produce wrong results
> ------------------------------------------------------------------------
>
>                 Key: HIVE-4193
>                 URL: https://issues.apache.org/jira/browse/HIVE-4193
>             Project: Hive
>          Issue Type: Bug
>          Components: PTF-Windowing
>    Affects Versions: 0.11.0
>            Reporter: Alan Gates
>         Attachments: Range_5_diff
>
>
> Window queries that define a windowing clause that has a termination row often (though
not all) return incorrect results.  For example, from our test queries all of the following
return incorrect results:
> {code}
> select s, sum(f) over (partition by t order by b 
>        rows between current row and unbounded following) 
> from over100k;
> select s, avg(f) over (partition by b order by d 
>        rows between 5 preceding and current row) 
> from over100k;
> select s, avg(f) over (partition by bin order by s 
>        rows between current row and 5 following) 
> from over100k;
> select s, avg(d) over (partition by i order by f desc 
>        rows between 5 preceding and 5 following) 
> from over100k;
> {code}

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