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https://issues.apache.org/jira/browse/HIVE-4109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13617370#comment-13617370
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Harish Butani commented on HIVE-4109:
-------------------------------------
+1
> Partition by column does not have to be in order by
> ---------------------------------------------------
>
> Key: HIVE-4109
> URL: https://issues.apache.org/jira/browse/HIVE-4109
> Project: Hive
> Issue Type: Bug
> Components: PTF-Windowing
> Reporter: Brock Noland
> Attachments: HIVE-4109.patch
>
>
> Cam up in the review of HIVE-4093.
> Ashutosh
> {noformat}
> I am not sure if this is illegal query. I tried following two queries in
> postgres, both of them succeeded.
> select p_mfgr, avg(p_retailprice) over(partition by p_mfgr, p_type order by
> p_mfgr) from part;
> select p_mfgr, avg(p_retailprice) over(partition by p_mfgr order by
> p_type,p_mfgr) from part;
> {noformat}
> Harish
> {noformat}
> The first one doesn't make sense, right? Order on a subset of the partition
> columns
> The second one: Can we do this with the Hive ReduceOp have the orderColumns
> be in a different order than the key columns?
> {noformat}
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