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https://issues.apache.org/jira/browse/HIVE-4214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13743566#comment-13743566
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Ashutosh Chauhan commented on HIVE-4214:
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https://reviews.facebook.net/D12375
> OVER accepts general expression instead of just function
> --------------------------------------------------------
>
> Key: HIVE-4214
> URL: https://issues.apache.org/jira/browse/HIVE-4214
> Project: Hive
> Issue Type: Bug
> Components: PTF-Windowing
> Affects Versions: 0.11.0
> Reporter: Alan Gates
>
> The query:
> select s, i, avg(d) / 10.0 over (partition by s order by i) from over100k;
> runs (and produces meaningless output).
> Over should not allow the arithmetic expression. Only a UDAF or PTF function
> should be valid there. The correct way to write this query should be
> select s, i, avg(d) over (partition by s order by i) / 10. 0 from over100k;
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