Re: substr_count

From: Michael Pohl <pgsql(at)newtopia(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Cc: Tom Rochester <tomr(at)chu(dot)com(dot)au>
Subject: Re: substr_count
Date: 2003-07-10 12:55:59
Message-ID: Pine.LNX.4.44.0307100843370.13741-100000@server1.techplant.com
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On Thu, 10 Jul 2003, Tom Rochester wrote:

> I would like to achive something along the lines of:
>
> SELECT field FROM table WHERE field ILIKE '$searchterm' ORDER BY
> substr_count(field, '$searchterm');

If you have plperl installed:

create or replace function substr_count(
varchar(255),
varchar(255)
)
returns int as '
my ($field, $searchterm) = @_;
my $count = $field =~ s/$searchterm//g;
return $count;
' language 'plperl';

michael

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