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From "Shuxiong Ye (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (PHOENIX-1660) Implement missing math built-in functions
Date Mon, 09 Mar 2015 18:21:39 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-1660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14353307#comment-14353307
] 

Shuxiong Ye edited comment on PHOENIX-1660 at 3/9/15 6:21 PM:
--------------------------------------------------------------

Hi [~jamestaylor],

I am a student from Peking University, and I feel interested in this project.

I've created an issue [1], and please assign it to me.

I've created a pull request in github[2]. please help me to review it.

Thank you.

[1] https://issues.apache.org/jira/browse/PHOENIX-1715
[2] https://github.com/apache/phoenix/pull/40


was (Author: shuxi0ng):
Hi [~jamestaylor],

I am a student from Peking University, and I feel interested in this project.

I've create an issue [1], and please assign it to me.

[1] https://issues.apache.org/jira/browse/PHOENIX-1715

> Implement missing math built-in functions
> -----------------------------------------
>
>                 Key: PHOENIX-1660
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1660
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>              Labels: Java, SQL, gsoc2015, mentor
>
> 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
> Examples of missing functions include POWER, LOG, EXP, SQRT, CBRT, etc. As a guide, examine
how ROUND is implemented in Phoenix as an abstract function with concrete functions per type:
long, decimal, and date/time types.



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