From: | Jim Nasby <jnasby(at)pervasive(dot)com> |
---|---|
To: | SunWuKung <Balazs(dot)Klein(at)t-online(dot)hu> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: sequence in select |
Date: | 2006-06-22 19:22:03 |
Message-ID: | BC39FD09-712B-45BD-8D7D-2CF94FB62745@pervasive.com |
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Thread: | |
Lists: | pgsql-general |
On Jun 22, 2006, at 9:10 AM, SunWuKung wrote:
> Hi,
> I put the following into a function. Is this always going to give me a
> sequence with an increment of 1 independently from other transactions?
> If not what would be the standard way to return a sequence from a
> query?
>
> CREATE TEMPORARY SEQUENCE rank_seq;
> SELECT nextval('rank_seq') FROM whatever ORDER BY id;
> DROP SEQUENCE rank_seq;
That will do what you want.
--
Jim C. Nasby, Sr. Engineering Consultant jnasby(at)pervasive(dot)com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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