Re: postgres function

From: "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>
To: Ramesh T <rameshparnanditech(at)gmail(dot)com>
Cc: "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>
Subject: Re: postgres function
Date: 2015-10-15 15:20:29
Message-ID: CAKFQuwaOxgxK1swMLuTLoOFA4k7zv1YxOLExfDjb-70g-OEntg@mail.gmail.com
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On Thu, Oct 15, 2015 at 10:05 AM, Ramesh T <rameshparnanditech(at)gmail(dot)com>
wrote:

> '123-987-123' it is not fixed some times it may be '1233-9873-123-098'
> as you said it's fixed,
>
> changes the values in middle of the -
>
> sometimes times i need 1233 and 098 or 9873,first position i'll find
> direct for second variable we don't know where it's end with -
>
> i.e ,
> i need to find second postition of the variable between the '-'
> ​​
>

​While I and others are likely inclined to provide you a working solution
to do so you need to state your data and requirement more clearly.​ Given
the apparent language dynamic I'd suggest supplying 5-10 example data
values along with their expected result.

​Otherwise, regular expressions almost certainly will let you solve your
problem (though, like Joe Conway indicated, split_​part may be possible)
once you learn how to construct them. regexp_matches(...) is the access
point to using them.

David J.

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