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Re: [SQL] getting the oid for a new tuple in a BEFORE trigger

From: Francesco Casadei <f_casadei(at)libero(dot)it>
To: Markus Wagner <wagner(at)imsd(dot)uni-mainz(dot)de>
Cc: pgsql-general(at)postgresql(dot)org, pgsql-sql(at)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [SQL] getting the oid for a new tuple in a BEFORE trigger
Date: 2001-08-30 09:05:23
Message-ID: 20010830110523.A1627@goku.kasby (view raw, whole thread or download thread mbox)
Lists: pgsql-generalpgsql-hackerspgsql-sql
On Wed, Aug 29, 2001 at 11:15:08AM +0200, Markus Wagner wrote:
> Hi,
> we need to control database changes within BEFORE triggers.
> There is no problem with triggers called by update, but there is
> a problem with triggers called by insert.
> We strongly need to know the oid of a newly inserted tuple. In this case, we 
> use tg_newtuple of the TriggerData structure passed to thetrigger function, 
> and its t_data -> t_oid will have the value '0'.
> Using BEFORE and AFTER triggers would make our lives much harder.
> Is there any way (even hack) to get the oid the newly inserted tuple will 
> receive?
> Thank you very much,
> Markus
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Read section 'Obtaining other results status' of the Programmer's
Guide. This is for the PL/pgSQL language, though.

	Francesco Casadei

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