From: | "Passynkov, Vadim" <Vadim(dot)Passynkov(at)pathcom(dot)com> |
---|---|
To: | "'Erik Thiele'" <erik(at)thiele-hydraulik(dot)de>, "Passynkov, Vadim" <Vadim(dot)Passynkov(at)pathcom(dot)com> |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: get sequence value of insert command |
Date: | 2004-11-22 14:58:29 |
Message-ID: | C8C8E7457059D5119E4700D0B765DCB8016AA912@sinope.inside.pathcom.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-sql |
> > > 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
From | Date | Subject | |
---|---|---|---|
Next Message | Richard Rowell | 2004-11-22 15:18:13 | Recursive SETOF function |
Previous Message | Rod Taylor | 2004-11-22 14:10:09 | Re: Doubt :- Image_Insert |