From: | Thusitha Kodikara <kthusi(at)yahoo(dot)com> |
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To: | pgsql-sql(at)postgresql(dot)org |
Subject: | Triggers using PL/pgSQL |
Date: | 2006-07-31 04:16:44 |
Message-ID: | 20060731041644.32247.qmail@web56610.mail.re3.yahoo.com |
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Lists: | pgsql-php pgsql-sql |
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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