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https://issues.apache.org/jira/browse/HIVE-12721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15066927#comment-15066927
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Jeremy Beard commented on HIVE-12721:
-------------------------------------
I also looked into creating a second UUID function that would return a DECIMAL,
but the range of UUIDs (2^128) does not fit within the largest DECIMAL
precision (10^38).
> Add UUID built in function
> --------------------------
>
> Key: HIVE-12721
> URL: https://issues.apache.org/jira/browse/HIVE-12721
> Project: Hive
> Issue Type: Improvement
> Components: UDF
> Reporter: Jeremy Beard
> Assignee: Jeremy Beard
> Attachments: HIVE-12721.patch
>
>
> A UUID function would be very useful for ETL jobs that need to generate
> surrogate keys.
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