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https://issues.apache.org/jira/browse/HIVE-9402?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HIVE-9402 started by Alexander Pivovarov.
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> Create GREATEST 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
>
> 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)
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