[jira] [Updated] (PHOENIX-1663) Implement missing string built-in functions

["James Taylor (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PHOENIX-1663?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

James Taylor updated PHOENIX-1663:
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    Description: 
Take a look at the typical string functions that are implemented in relational database systems (http://www.postgresql.org/docs/8.1/static/functions-string.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 POSITION, OVERLAY, REPEAT, etc.

  was:
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.


> Implement missing string built-in functions
> -------------------------------------------
>
>                 Key: PHOENIX-1663
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1663
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>              Labels: gsoc2015
>
> Take a look at the typical string functions that are implemented in relational database systems (http://www.postgresql.org/docs/8.1/static/functions-string.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 POSITION, OVERLAY, REPEAT, etc.



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