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From: David Clarke <pigwin32@gmail.com>
To: Markus Schaber <schabi@logix-tt.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: Alternative to serial primary key
Date: Thu, 6 Jul 2006 23:06:09 +1200
Message-ID: <12b7ac1e0607060406r16d03f74mfa303eec9ab4821f@mail.gmail.com> (raw)
In-Reply-To: <44ACEA1C.9030804@logix-tt.com>
References: <12b7ac1e0607060316ub7b5e21i5e8e3bef2504e02c@mail.gmail.com>
	<44ACEA1C.9030804@logix-tt.com>

On 7/6/06, Markus Schaber <schabi@logix-tt.com> wrote:
> This is a good idea if you want to have taller indices, but you still
> need to re-check the "real" key due to hash collisions.

I am aware there are collisions with md5 but without any actual proof
I believe the risk to be very low with the data I'm storing which is a
kind of scrubbed free form residential address.

>
> If you've plenty of time to spend, you could also bring the hash index
> type back to life, which is currently deprecated according to the
> PostgreSQL docs...

Unfortunately with the meagre time I have available, the only dent I'm
likely to make is in the wall with my head.



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