[jira] [Commented] (DRILL-2658) Add ilike and regex substring functions

["Patrick Toole (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-2658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14567866#comment-14567866 ] 

Patrick Toole commented on DRILL-2658:
--------------------------------------

This form breaks other downstream items:

SELECT * FROM table_name WHERE column_name ilike '4\t' ESCAPE '\'

 

> Add ilike and regex substring functions
> ---------------------------------------
>
>                 Key: DRILL-2658
>                 URL: https://issues.apache.org/jira/browse/DRILL-2658
>             Project: Apache Drill
>          Issue Type: New Feature
>          Components: Functions - Drill
>            Reporter: Steven Phillips
>            Assignee: Steven Phillips
>             Fix For: 1.0.0
>
>         Attachments: DRILL-2658.patch, DRILL-2658.patch
>
>
> This will not modify the parser, so postgress syntax such as:
> "... where c ILIKE '%ABC%'"
> will not be currently supported. It will simply be a function:
> "... where ILIKE(c, '%ABC%')"
> Same for substring:
> "select substr(c, 'abc')..."
> will be equivalent to postgress
> "select substr(c from 'abc')",
> but 'abc' will be treated as a java regex pattern.



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