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https://issues.apache.org/jira/browse/HIVE-1304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Sichi updated HIVE-1304:
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Attachment: HIVE-1304.2.patch
> add row_sequence UDF
> --------------------
>
> Key: HIVE-1304
> URL: https://issues.apache.org/jira/browse/HIVE-1304
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
> Affects Versions: 0.6.0
> Reporter: John Sichi
> Assignee: John Sichi
> Fix For: 0.7.0
>
> Attachments: HIVE-1304.1.patch, HIVE-1304.2.patch
>
>
> This is a poor man's answer to the standard analytic function row_number();
> it assigns a sequence of numbers to rows, starting from 1.
> I'm calling it row_sequence() to distinguish it from the real analytic
> function, so that once we add support for those, there won't be any conflict
> with the existing UDF.
> The problem with this UDF approach is that there are no guarantees about
> ordering in SQL processing internals, so use with caution.
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