[jira] Created: (HIVE-345) Extend Date UDFs to support time zone and full specs as in MySQL

["Zheng Shao (JIRA)" <ji...@apache.org>]

Extend Date UDFs to support time zone and full specs as in MySQL
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                 Key: HIVE-345
                 URL: https://issues.apache.org/jira/browse/HIVE-345
             Project: Hadoop Hive
          Issue Type: Improvement
          Components: Query Processor
    Affects Versions: 0.3.0
            Reporter: Zheng Shao


Most of the Date UDF in Hive now are based on String instead of Date objects, and they have limited functionality compared with MySQL.

http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_from-unixtime
http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_date-add
http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_date-sub
http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_datediff

We should make it fully compliant with what MySQL offers.


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