From: | Richard Broersma Jr <rabroersma(at)yahoo(dot)com> |
---|---|
To: | Paul Lambert <paul(dot)lambert(at)autoledgers(dot)com(dot)au>, pgsql-sql(at)postgresql(dot)org |
Subject: | Re: Moving a simple function to pl/pgsql (Novice question) |
Date: | 2007-04-04 13:06:45 |
Message-ID: | 806297.7462.qm@web31805.mail.mud.yahoo.com |
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Lists: | pgsql-sql |
--- Paul Lambert <paul(dot)lambert(at)autoledgers(dot)com(dot)au> wrote:
> The purpose being when a row in a table in one database is updated, it
> will copy (or replicate I guess) the record into a different table into
> another database in the same server. (deleting said record first if it
> already exists)
>
> What is the best way to do this within Postgres?
In postgresql, there are two parts to implementing a trigger; the trigger function and the actual
trigger on the table that calls this function.
Here is a good example:
http://www.postgresql.org/docs/8.2/interactive/plpgsql-trigger.html#PLPGSQL-TRIGGER-AUDIT-EXAMPLE
One other point to be aware of, Postgresql does not allow your to reference other databases in the
DB-cluster directly. It is possible but you need to add a contrib module called dblink:
http://pgfoundry.org/projects/snapshot/
Hope this helps,
Regards,
Richard Broersma Jr.
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