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* Statistics from Sequences
@ 2005-09-07 02:43 Joÿffffffffffe3o Carvalho <joaocarvalho127@yahoo.com.br>
0 siblings, 2 replies; 6+ messages in thread
From: Joÿffffffffffe3o Carvalho @ 2005-09-07 02:43 UTC (permalink / raw)
To: pgsql-sql
Is it possible to get from a sequence:
The sequence owner
The min value
The max value
The increment value
The last used number
???
Regards
---------------------------------
Yahoo! Messenger com voz: PROMOÇÃO VOCÊ PODE LEVAR UMA VIAGEM NA CONVERSA. Participe!
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: Statistics from Sequences
@ 2005-09-07 03:26 Michael Fuhr <mike@fuhr.org>
parent: Joÿffffffffffe3o Carvalho <joaocarvalho127@yahoo.com.br>
1 sibling, 2 replies; 6+ messages in thread
From: Michael Fuhr @ 2005-09-07 03:26 UTC (permalink / raw)
To: Joÿffffffffffe3o Carvalho <joaocarvalho127@yahoo.com.br>; +Cc: pgsql-sql
On Tue, Sep 06, 2005 at 11:43:44PM -0300, Joÿffffffffffe3o Carvalho wrote:
> Is it possible to get from a sequence:
>
> The sequence owner
> The min value
> The max value
> The increment value
> The last used number
See the output from the following example:
CREATE SEQUENCE fooseq;
SELECT u.usename
FROM pg_class AS c JOIN pg_user AS u ON u.usesysid = c.relowner
WHERE c.relname = 'fooseq';
SELECT * FROM fooseq;
--
Michael Fuhr
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: Statistics from Sequences
@ 2005-09-07 03:38 Bruno Wolff III <bruno@wolff.to>
parent: Joÿffffffffffe3o Carvalho <joaocarvalho127@yahoo.com.br>
1 sibling, 0 replies; 6+ messages in thread
From: Bruno Wolff III @ 2005-09-07 03:38 UTC (permalink / raw)
To: Joÿffffffffffe3o Carvalho <joaocarvalho127@yahoo.com.br>; +Cc: pgsql-sql
On Tue, Sep 06, 2005 at 23:43:44 -0300,
Joÿffffffffffe3o Carvalho <joaocarvalho127@yahoo.com.br> wrote:
> Is it possible to get from a sequence:
>
> The sequence owner
> The min value
> The max value
> The increment value
> The last used number
Yes. Associated with each sequence is a one row table with the name of the
sequence. Note that numbers can be allocated and not used, so the last_value
may not be exactly what you want.
To get the owner you can combine pg_class with pg_user to get the table
owner. I didn't see this information in the information schema.
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: Statistics from Sequences
@ 2005-09-08 20:08 Michael Fuhr <mike@fuhr.org>
parent: Michael Fuhr <mike@fuhr.org>
1 sibling, 1 reply; 6+ messages in thread
From: Michael Fuhr @ 2005-09-08 20:08 UTC (permalink / raw)
To: Joÿffffffffffe3o Carvalho <joaocarvalho127@yahoo.com.br>; +Cc: pgsql-sql
[Please copy the mailing list on replies so others can participate
in and learn from the discussion.]
On Thu, Sep 08, 2005 at 02:32:12PM -0300, Joÿffffffffffe3o Carvalho wrote:
> Can you give me a help about:
>
> > The min value
> > The max value
> > The increment value
> > The last used number
The example I posted shows how to obtain those values:
CREATE SEQUENCE fooseq;
SELECT * FROM fooseq;
If you want only particular columns then specify them:
SELECT min_value, max_value, increment_by, last_value FROM fooseq;
--
Michael Fuhr
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: Statistics from Sequences
@ 2005-09-08 20:53 Joÿffffffffffe3o Carvalho <joaocarvalho127@yahoo.com.br>
parent: Michael Fuhr <mike@fuhr.org>
0 siblings, 0 replies; 6+ messages in thread
From: Joÿffffffffffe3o Carvalho @ 2005-09-08 20:53 UTC (permalink / raw)
To: pgsql-sql
Michael Fuhr <mike@fuhr.org> escreveu:
[Please copy the mailing list on replies so others can participate
in and learn from the discussion.]
On Thu, Sep 08, 2005 at 02:32:12PM -0300, Joÿffffffffffe3o Carvalho wrote:
> Can you give me a help about:
>
> > The min value
> > The max value
> > The increment value
> > The last used number
The example I posted shows how to obtain those values:
CREATE SEQUENCE fooseq;
SELECT * FROM fooseq;
If you want only particular columns then specify them:
SELECT min_value, max_value, increment_by, last_value FROM fooseq;
--
Michael Fuhr
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Thank you very much, you've been a great help.
Regards
---------------------------------
Yahoo! Messenger com voz: PROMOÇÃO VOCÊ PODE LEVAR UMA VIAGEM NA CONVERSA. Participe!
^ permalink raw reply [nested|flat] 6+ messages in thread
* Re: Statistics from Sequences
@ 2005-09-08 22:04 Michael Fuhr <mike@fuhr.org>
parent: Michael Fuhr <mike@fuhr.org>
1 sibling, 0 replies; 6+ messages in thread
From: Michael Fuhr @ 2005-09-08 22:04 UTC (permalink / raw)
To: Joÿffffffffffe3o Carvalho <joaocarvalho127@yahoo.com.br>; +Cc: pgsql-sql
[Again, please copy the mailing list on replies so others can
participate in and learn from the discussion.]
On Thu, Sep 08, 2005 at 06:25:33PM -0300, Joÿffffffffffe3o Carvalho wrote:
> There's one thing. If the sequence name was fooseq in uppercase
> (FOOSEQ) it does not work. In that case it returns the error: ERROR:
> relation "fooseq" does not exist.
This isn't a sequence issue, it's an identifier issue. See "Why
are my table and column names not recognized in my query?" in the
FAQ and "Identifiers and Key Words" in the documentation:
http://www.postgresql.org/docs/faqs.FAQ.html#4.20
http://www.postgresql.org/docs/8.0/static/sql-syntax.html#SQL-SYNTAX-IDENTIFIERS
--
Michael Fuhr
^ permalink raw reply [nested|flat] 6+ messages in thread
end of thread, other threads:[~2005-09-08 22:04 UTC | newest]
Thread overview: 6+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2005-09-07 02:43 Statistics from Sequences Joÿffffffffffe3o Carvalho <joaocarvalho127@yahoo.com.br>
2005-09-07 03:26 ` Michael Fuhr <mike@fuhr.org>
2005-09-08 20:08 ` Michael Fuhr <mike@fuhr.org>
2005-09-08 20:53 ` Joÿffffffffffe3o Carvalho <joaocarvalho127@yahoo.com.br>
2005-09-08 22:04 ` Michael Fuhr <mike@fuhr.org>
2005-09-07 03:38 ` Bruno Wolff III <bruno@wolff.to>
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