Re: SQL-question: returning the id of an insert querry

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От Alvaro Herrera
Тема Re: SQL-question: returning the id of an insert querry
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Msg-id 20031109185245.GA28993@dcc.uchile.cl
обсуждение исходный текст
Ответ на Re: SQL-question: returning the id of an insert querry  (Scott Chapman <scott_list@mischko.com>)
Ответы Re: SQL-question: returning the id of an insert querry  (Scott Chapman <scott_list@mischko.com>)
Список pgsql-general
On Sun, Nov 09, 2003 at 10:26:51AM -0800, Scott Chapman wrote:
> On Sunday 09 November 2003 03:13, Martijn van Oosterhout wrote:
> > After you've done the insert on the address table, you can use
> > currval('address_id_seq') (or equivalent) to get the ID. Ofcourse you
> > have to have used nextval() for the original insert.
>
> What if someone else inserts another address before I get the currval?
> I'm out of luck then, right?

No, currval is concurrency-safe.  That's exactly what sequences are for.

--
Alvaro Herrera (<alvherre[a]dcc.uchile.cl>)
"I call it GNU/Linux. Except the GNU/ is silent." (Ben Reiter)

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