Re: substr_count

From: "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com>
To: Tom Rochester <tomr(at)chu(dot)com(dot)au>
Cc: <pgsql-sql(at)postgresql(dot)org>
Subject: Re: substr_count
Date: 2003-07-10 15:36:50
Message-ID: Pine.LNX.4.33.0307100936220.10734-100000@css120.ihs.com
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On Thu, 10 Jul 2003, Tom Rochester wrote:

> Hey all,
>
> I would like to achive something along the lines of:
>
> SELECT field FROM table WHERE field ILIKE '$searchterm' ORDER BY
> substr_count(field, '$searchterm');
>
> Of course the substr_count function does not exist. Is there anyway to
> do this?
>
> I had a thought char_count(replace(field, !$searchterm, '')) might do
> the job but replace doesn't allow for 'replace everything NOT string';

You'll likely have to code a bit in pl/pgsql. The regex capable substring
of 7.3 might come in handy.

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