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From Nicolas Paris <nipari...@gmail.com>
Subject Re: REGEX search Operator
Date Fri, 05 Feb 2016 08:39:27 GMT
John,

Sorry for that, this already work as expected.
Give it a try, this is so easy to deploy

SELECT first_name FROM cp.`employee.json` WHERE contains(first_name,'\w+')
LIMIT 5;
first_name |
-----------|
Sheri      |
Derrick    |
Michael    |
Maya       |
Roberta    |


2016-02-04 20:41 GMT+01:00 John Omernik <john@omernik.com>:

> Ya, do you see where I am coming from here? Let's let the users submit
> regex in the pure form if possible, and code the nuances of java regex
> behind the scenes. I think it would be a great way to make Drill very
> accessible and desirable.  I think what happened in Hive is the regex
> commands started with the users having the escape and now there are just to
> many things that using the escaped regex and the project doesn't want to
> adjust.
>
>
>
>
> On Thu, Feb 4, 2016 at 1:38 PM, Nicolas Paris <niparisco@gmail.com> wrote:
>
> > You mean:
> > userRegex=>javaRegex
> > "\d" => "\\d"
> > "\w" => "\\w"
> > "\n" => "\n"
> > I can do that thanks to regex I guess.
> > I will give a try
> >
> >
> > 2016-02-04 19:37 GMT+01:00 John Omernik <john@omernik.com>:
> >
> > > So my question on the double escape, is there no way to handle that so
> > the
> > > user can use single escaped regex? I know many folks who use big data
> > > platform to test large complex regexes for things like security
> > appliances,
> > > and having to convert the regex seems like a lot of work if you
> consider
> > > every user has to do that.  If there was a way to do it in Drill, that
> > > would save countless people hours and save many mistakes.
> > >
> > > On Thu, Feb 4, 2016 at 12:03 PM, Nicolas Paris <niparisco@gmail.com>
> > > wrote:
> > >
> > > > John, Jason,
> > > >
> > > > 2016-02-04 18:47 GMT+01:00 John Omernik <john@omernik.com>:
> > > >
> > > > > I'd be curios on how you are implemeting the regex... using Java's
> > > regex
> > > > > libraries? etc.
> > > > >
> > > > ​Yeah, I use
> > > > java.util.regex
> > > > ​
> > > >
> > > >
> > > > > 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.
> > > > >
> > > > ​My guess is this comes from java way to handle strings. All
> langages I
> > > > have used need to double escape.​
> > > >
> > > >
> > > > > On Thu, Feb 4, 2016 at 11:37 AM, Jason Altekruse <
> > > > altekrusejason@gmail.com
> > > > > >
> > > > > wrote:
> > > >
> > > > ​code is here: https://github.com/parisni/drill-simple-contains
> > > > It's disturbing how it is simple...
> > > > ​
> > > >
> > > >
> > > > > > 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).
> > > > >
> > > > ​well the folder tree is quite impressive (
> > > https://github.com/apache/drill
> > > > ).
> > > > ​
> > > >
> > > > ​what folder is supposed to be "
> > > > ​
> > > > Drill itself"
> > > > ​ ?​
> > > > ​
> > > >
> > > > > > 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.
> > > > >
> > > > ​Ok I will try thanks​
> > > >
> > > > ​a lot​
> > > >
> > > > > > - 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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