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From: Paul Lambert <paul.lambert@autoledgers.com.au>
To: sql pgsql <pgsql-sql@postgresql.org>
Subject: Re: Extracting hostname from URI column
Date: Wed, 12 Sep 2007 10:38:04 +0800
Message-ID: <46E7510C.1090807@autoledgers.com.au> (raw)
In-Reply-To: <b35603930709111919y475cd202gfc70d52a2db508dc@mail.gmail.com>
References: <335491.75226.qm@web54303.mail.re2.yahoo.com>
	<46E73D1C.4020009@autoledgers.com.au>
	<b35603930709111919y475cd202gfc70d52a2db508dc@mail.gmail.com>

Andrej Ricnik-Bay wrote:

> Plain regex.... The key are the parenthesis () ...
> basically it will omit ANYTHING + two slashes at the beginning
> of a string.  Then it will match everything BUT a slash, and as
> much of that as possible since regex are greedy by default
> (hence the host name he was looking for) ... and everything
> AFTER a slash will be omitted.
> 
> 
> 
> Cheers,
> Andrej
> 
> 
Thanks - that makes a bit more sense. I'm in the middle of reading 
chapter 9.3.7 of the manual - POSIX Regular Expressions - which I'm 
assuming is dealing with this, so it's looking clearer.

-- 
Paul Lambert
Database Administrator
AutoLedgers



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