Re: Create Assertion -- Question from a newbie

From: Andrew Sullivan <ajs(at)crankycanuck(dot)ca>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: Create Assertion -- Question from a newbie
Date: 2006-08-28 10:46:03
Message-ID: 20060828104603.GA2492@phlogiston.dyndns.org
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On Sun, Aug 27, 2006 at 07:39:49AM -0700, Richard Broersma Jr wrote:

> Ah, I see. So the points is that checking the integrity between
> two complete data sets can become a preformace killer.

Not necessarily. More exactly, building a support system that can
check such integrity in a completely general way, such that it could
be used for any arbitrary data, is a hard problem that might destroy
performance. It's also a pretty exotic feature. You might want to
ask on the -hackers list for more detail, though.

A

--
Andrew Sullivan | ajs(at)crankycanuck(dot)ca
This work was visionary and imaginative, and goes to show that visionary
and imaginative work need not end up well.
--Dennis Ritchie

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