Обсуждение: resetting sequence

My sequence starts from 1 and after few months it
should be reset to 1 again. Can this be automated ??

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take a look at the SETVAL function... it's something close to:

SELECT SETVAL('sequence_name', 1);

something like that.  check the manual.

On Tue, 26 Mar 2002, Kancha . wrote:

> My sequence starts from 1 and after few months it
> should be reset to 1 again. Can this be automated ??
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Movies - coverage of the 74th Academy Awards�
> http://movies.yahoo.com/
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: Have you checked our extensive FAQ?
>
> http://www.postgresql.org/users-lounge/docs/faq.html
>

It also looks like you might want to check out the unix cron utility.
From your shell prompt, try
man crontab

On Tue, Mar 26, 2002 at 09:30:10PM -0800, Philip Hallstrom wrote:
> take a look at the SETVAL function... it's something close to:
>
> SELECT SETVAL('sequence_name', 1);
>
> something like that.  check the manual.
>
> On Tue, 26 Mar 2002, Kancha . wrote:
>
> > My sequence starts from 1 and after few months it
> > should be reset to 1 again. Can this be automated ??
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Yahoo! Movies - coverage of the 74th Academy Awards�
> > http://movies.yahoo.com/
> >
> > ---------------------------(end of broadcast)---------------------------
> > TIP 5: Have you checked our extensive FAQ?
> >
> > http://www.postgresql.org/users-lounge/docs/faq.html
> >
>
>
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----- Original Message -----
From: Kancha . <kancha2np@yahoo.com>
To: <pgsql-general@postgresql.org>; <pgsql-sql@postgresql.org>
Sent: Tuesday, March 26, 2002 8:30 PM
Subject: [SQL] resetting sequence


> My sequence starts from 1 and after few months it
> should be reset to 1 again. Can this be automated ??


If the use of the sequence is predictable, you may want to alter the CYCLE
and MAXVALUE options in the seqence creation.

EG:

CREATE SEQUENCE foo MAXVALUE 3000 CYCLE;