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https://issues.apache.org/jira/browse/HIVE-12070?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Szehon Ho resolved HIVE-12070.
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Resolution: Implemented
Resolved via HIVE-12082
> Relax type restrictions on 'Greatest' and 'Least'
> -------------------------------------------------
>
> Key: HIVE-12070
> URL: https://issues.apache.org/jira/browse/HIVE-12070
> Project: Hive
> Issue Type: Improvement
> Components: UDF
> Affects Versions: 1.1.1, 1.2.1
> Reporter: Szehon Ho
> Assignee: Szehon Ho
>
> Hive functions 'greatest' and 'least' have one of the strictest type
> restrictions of any database.
> Experimented with other databases, Postgres and MySQL, all of them are much
> more relaxed. Tinyint (not in postgres), smallint, int, bigint, decimal,
> double, float can all be passed to these functions without complaint. In
> Hive, one cannot even do a greatest comparison between int and bigint without
> hitting exception.
> This JIRA aims to relax the restriction and make it more akin to the other
> databases.
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