[PHOENIX-1715] Implement Build-in math function Sign

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.4.0
• Assignee: Shuxiong Ye
• Reporter: Shuxiong Ye
• Created: 09/Mar/15 18:08
• Updated: 21/Nov/15 02:15
• Resolved: 16/Mar/15 19:51

Description

Take a look at the typical math functions that are implemented in relational database systems (http://www.postgresql.org/docs/current/static/functions-math.html) and implement the same for Phoenix in Java following this guide: http://phoenix-hbase.blogspot.com/2013/04/how-to-add-your-own-built-in-function.html