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From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Jean-Luc Lachance <jllachan@nsd.ca>
Cc: pgsql-sql <pgsql-sql@postgresql.org>
Subject: Re: Rules/Trigges Trade-offs
Date: Fri, 6 Dec 2002 11:34:37 -0500 (EST)
Message-ID: <200212061634.gB6GYbt02565@candle.pha.pa.us> (raw)
In-Reply-To: <3DF0CA63.84F4D48@nsd.ca>

My book has a section on that:

	http://www.postgresql.org/docs/awbook.html

Triggers are mostly for testing/modifying the row being
inserted/updated, while rules are better for affecting other rows or
other tables.


Jean-Luc Lachance wrote:
> Hi all!
> 
> Is there a guideline on the use of rules compared to triggers when both
> can be use to achieve the same result?
> 
> JLL
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
> 

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073



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