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https://issues.apache.org/jira/browse/HIVE-774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Zheng Shao resolved HIVE-774.
-----------------------------
Resolution: Fixed
Fix Version/s: 0.5.0
0.4.0
Release Note: HIVE-774. Fix the behavior of / and add DIV. (Ning Zhang via
zshao)
Hadoop Flags: [Incompatible change, Reviewed] (was: [Incompatible change])
Committed. Thanks Ning!
> Fix the behavior of "/" and add "DIV"
> -------------------------------------
>
> Key: HIVE-774
> URL: https://issues.apache.org/jira/browse/HIVE-774
> Project: Hadoop Hive
> Issue Type: Bug
> Affects Versions: 0.4.0, 0.5.0
> Reporter: Zheng Shao
> Assignee: Ning Zhang
> Fix For: 0.4.0, 0.5.0
>
> Attachments: hive-774.patch
>
>
> In hive, "select 3/2" will return 1 while MySQL returns 1.5.
> See
> http://dev.mysql.com/doc/refman/5.0/en/arithmetic-functions.html#operator_div
> for details.
> {code}
> mysql> select 3/2;
> +--------+
> | 3/2 |
> +--------+
> | 1.5000 |
> +--------+
> 1 row in set (0.00 sec)
> mysql> select 3 div 2;
> +---------+
> | 3 div 2 |
> +---------+
> | 1 |
> +---------+
> 1 row in set (0.00 sec)
> mysql> select -3 div 2;
> +----------+
> | -3 div 2 |
> +----------+
> | -1 |
> +----------+
> 1 row in set (0.00 sec)
> mysql> select -3 div -2;
> +-----------+
> | -3 div -2 |
> +-----------+
> | 1 |
> +-----------+
> 1 row in set (0.00 sec)
> mysql> select 3 div -2;
> +----------+
> | 3 div -2 |
> +----------+
> | -1 |
> +----------+
> 1 row in set (0.00 sec)
> {code}
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