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Re: Oracle NULL vs '' revisited

From: Tony Rogerson <tonyrogerson_at_torver.net>
Date: Wed, 22 Aug 2007 06:56:05 +0100
Message-ID: <fagj7m$ck6$1$8300dec7@news.demon.co.uk>


> Server statement trigger performs row-actions when the primary key was
> updated (lining up those INSERTED and DELETED rows may prove
> difficult...). Having to do a JOIN on the transition tables to get to rows
> is just nastily inefficient and can be outright wrong.

A reason why the majority of SQL Server folks use a surrogate key in way of IDENTITY - imutable.

-- 
Tony Rogerson, SQL Server MVP
http://sqlblogcasts.com/blogs/tonyrogerson
[Ramblings from the field from a SQL consultant]
http://sqlserverfaq.com
[UK SQL User Community]
Received on Wed Aug 22 2007 - 00:56:05 CDT

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