Szehon Ho created HIVE-12070:
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Summary: Relax type restrictions on 'Greatest' and 'Least'
Key: HIVE-12070
URL: https://issues.apache.org/jira/browse/HIVE-12070
Project: Hive
Issue Type: Bug
Components: UDF
Reporter: 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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