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From John Omernik <j...@omernik.com>
Subject Re: REGEX search Operator
Date Thu, 04 Feb 2016 17:47:29 GMT
I'd be curios on how you are implemeting the regex... using Java's regex
libraries? etc.

I know one thing with Hive that always bothered me was the need to double
escape things.

'\d\d\d\d-\d\d-\d\d'  needed to be '\\d\\d\\d\\d-\\d\\d-\\d\\d' of we can
avoid that it would be AWESOME.

On Thu, Feb 4, 2016 at 11:37 AM, Jason Altekruse <altekrusejason@gmail.com>
wrote:

> I think you should actually just put the function in Drill itself. System
> native functions are implemented in the same interface as UDFs, because our
> mechanism for evaluating them is very efficient (we code generate code
> blocks by linking together the bodies of the individual functions to
> evaluate a complete expression).
>
> You can open a JIRA, marking it a feature request. You can open a poll
> request against the apache github repo, making sure you follow the standard
> format for your commit message, prefixing with the JIRA number in the
> format
> Example:
> DRILL-XXXX: Feature description
>
> This will automatically link the PR to your JIRA.
>
> - Jason
>
> On Thu, Feb 4, 2016 at 8:44 AM, Nicolas Paris <niparisco@gmail.com> wrote:
>
> > Jason, I have it working,
> >
> > Just tell me the way to proceed to PR.
> > 1. where do I put my maven project ? Witch folder in my drill github
> fork?
> > 2. do I need a jira ? how proceed ?
> >
> > For now, I only published it on my github account in a separate project
> >
> > Thanks
> >
> > 2016-02-04 16:52 GMT+01:00 Jason Altekruse <altekrusejason@gmail.com>:
> >
> > > Awesome, thanks!
> > >
> > > On Thu, Feb 4, 2016 at 7:44 AM, Nicolas Paris <niparisco@gmail.com>
> > wrote:
> > >
> > > > Well I am creating a udf
> > > > good exercise
> > > > I hope a PR soon
> > > >
> > > > 2016-02-04 16:37 GMT+01:00 Jason Altekruse <altekrusejason@gmail.com
> >:
> > > >
> > > > > I didn't realize that we were lacking this functionality. As the
> > > > > repeated_contains operator handles wildcards it makes sense to add
> > > such a
> > > > > function to drill.
> > > > >
> > > > > It should be simple to implement, would someone like to open a JIRA
> > and
> > > > > submit a PR for this?
> > > > >
> > > > > - Jason
> > > > >
> > > > > On Tue, Feb 2, 2016 at 8:56 AM, John Omernik <john@omernik.com>
> > wrote:
> > > > >
> > > > > > I would like to see something like this as well, even if it's
an
> > > > included
> > > > > > UDF like REGEX(field, pattern) using Java's library for regex
> like
> > > Hive
> > > > > > does.  That would be EXTREMELY helpful.
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > On Tue, Feb 2, 2016 at 6:55 AM, Nicolas Paris <
> niparisco@gmail.com
> > >
> > > > > wrote:
> > > > > >
> > > > > > > > ANSI SQL doesn't define regex operator.
> > > > > > > > Drill neither.
> > > > > > > >
> > > > > > > ​Drill has SQL functions extension like "REPEATED_CONTAINS"​
> that
> > > > looks
> > > > > > to
> > > > > > > handle regex. regex operator could be replaced with one
new SQL
> > > > > > extension ?
> > > > > > > I guess I could create my own functions in java, right
? Maybe
> > push
> > > > it
> > > > > > into
> > > > > > > github then ?
> > > > > > >
> > > > > > >
> > > > > > > > Doesn't it enough 'LIKE' operator?
> > > > > > > >
> > > > > > >
> > > > > > > ​Sadly not, I'am looking for complex pattern matching.
​
> > > > > > >
> > > > > > >
> > > > > > > --
> > > > > > > > Miura, Masahide
> > > > > > > >
> > > > > > > > -----Original Message-----
> > > > > > > > From: Nicolas Paris [mailto:niparisco@gmail.com]
> > > > > > > > Sent: Tuesday, February 02, 2016 9:04 PM
> > > > > > > > To: user@drill.apache.org
> > > > > > > > Subject: REGEX search Operator
> > > > > > > >
> > > > > > > > Hello,
> > > > > > > >
> > > > > > > > I can't find any reference in the documentation about
a regex
> > > > > operator.
> > > > > > > >
> > > > > > > > I would like to be able to query this way :
> > > > > > > >
> > > > > > > > SELECT *
> > > > > > > > FROM xxx
> > > > > > > > WHERE  text_field   regexOperator    'regex_pattern';
> > > > > > > >
> > > > > > > > Thanks for helping,
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>

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