From: Thusitha Kodikara <kthusi@yahoo.com>
To: pgsql-sql@postgresql.org
Subject: Triggers using PL/pgSQL
Date: Sun, 30 Jul 2006 21:16:44 -0700 (PDT)
Message-ID: <20060731041644.32247.qmail@web56610.mail.re3.yahoo.com> (raw)
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?
Thanks and regards,
-Thusitha
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Cc: kthusi@yahoo.com
Subject: Re: Triggers using PL/pgSQL
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