From: Milen A. Radev <milen@radev.net>
To: pgsql-sql@postgresql.org
Subject: Re: Triggers using PL/pgSQL
Date: Mon, 31 Jul 2006 19:12:30 +0300
Message-ID: <44CE2BEE.2070201@radev.net> (raw)
In-Reply-To: <20060731041644.32247.qmail@web56610.mail.re3.yahoo.com>
References: <20060731041644.32247.qmail@web56610.mail.re3.yahoo.com>
Thusitha Kodikara написа:
> Hello,
>
> I am interested in developing some triggers to keep track of records that are changed (possibly the changes of one or more specific columns). In addition to keeping the new values, I also need to keep the old values (may be on a separate table).
>
> Though I have done similar things in other RDBMs using SQL, I find doing this in Postgres, a little bit complicated - may be because it needs to be done through a separate procedural language and through a separate function. The Postgres documentation also didn't provide much help ( the examples in C). I was mainly looking for example showing how to refer 'OLD' and 'NEW' rows using PL/pgSQL.
>
> Can someone please direct me to some such examples?
http://www.postgresql.org/docs/8.1/static/plpgsql-trigger.html
--
Milen A. Radev
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To: pgsql-sql@postgresql.org
Cc: milen@radev.net
Subject: Re: Triggers using PL/pgSQL
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