[HIVE-345] Extend Date UDFs to support time zone and full specs as in MySQL

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.3.0
• Component/s: UDF
• Assignee: Unassigned Assign to me
• Reporter: Zheng Shao
• Created: 12/Mar/09 07:04
• Updated: 08/Apr/17 19:51

Description

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.

Issue Links

• depends upon: HIVE-313 add UDF date_add, date_sub, datediff
• relates to: HIVE-1269 Support Date/Datetime/Time/Timestamp Primitive Types