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https://issues.apache.org/jira/browse/HIVE-9402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14290412#comment-14290412
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Lefty Leverenz commented on HIVE-9402:
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Doc note: GREATEST and LEAST should be documented in the "Conditional
Functions" section of the UDFs doc, with version information and a link to this
issue.
* [Hive Operators and UDFs -- Conditional Functions |
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF#LanguageManualUDF-ConditionalFunctions]
> Create GREATEST and LEAST udf
> -----------------------------
>
> Key: HIVE-9402
> URL: https://issues.apache.org/jira/browse/HIVE-9402
> Project: Hive
> Issue Type: Task
> Components: UDF
> Reporter: Alexander Pivovarov
> Assignee: Alexander Pivovarov
> Labels: TODOC15
> Fix For: 0.15.0
>
> Attachments: HIVE-9402.1.patch, HIVE-9402.2.patch, HIVE-9402.3.patch,
> HIVE-9402.4.patch, HIVE-9402.4.patch, HIVE-9402.5.patch, HIVE-9402.5.patch,
> HIVE-9402.6.patch, HIVE-9402.7.patch
>
>
> GREATEST function returns the greatest value in a list of values
> Signature: T greatest(T v1, T v2, ...)
> all values should be the same type (like in COALESCE)
> LEAST returns the least value in a list of values
> Signature: T least(T v1, T v2, ...)
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