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From: "Passynkov, Vadim" <Vadim.Passynkov@pathcom.com>
To: "'Erik Thiele'" <erik@thiele-hydraulik.de>,
	"Passynkov, Vadim" <Vadim.Passynkov@pathcom.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: get sequence value of insert command
Date: Mon, 22 Nov 2004 09:58:29 -0500
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> > > create sequence mysequence;
> > > 
> > > create table foo(
> > >   id integer default nextval('mysequence'),
> > >   bla text,
> > >   wombat integer,
> > >   foobar date,
> > >   primary key(id)
> > > );
> > > 
> > > insert into foo (wombat) values (88);
> > > 
> > > now how do i know the id of my newly inserted element? and
> > > how can this be done in a completely concurrency safe way?
> > 
> > CREATE RULE get_pkey_on_insert AS ON INSERT TO foo DO SELECT
> > currval('mysequence') AS id LIMIT 1;
> 
> now that one is really great! you should definitly add it to the
> faq. plus an additional explanation why the limit 1 is needed here.

INSERT INTO foo ( ... ) ( SELECT * FROM foo1 );

> 
> thanks!
> erik
> 

-- 
Vadim Passynkov