Re: Multi row sequence?
От | Ragnar Hafstað |
---|---|
Тема | Re: Multi row sequence? |
Дата | |
Msg-id | 1103491642.1867.12.camel@localhost.localdomain обсуждение исходный текст |
Ответ на | Re: Multi row sequence? (Ciprian Popovici <ciprian@zuavra.net>) |
Список | pgsql-general |
On Sun, 2004-12-19 at 22:43 +0200, Ciprian Popovici wrote: > On Sun, 19 Dec 2004 13:51:39 +0000 Ragnar Hafstað <gnari@simnet.is> wrote: > > On Sun, 2004-12-19 at 15:02 +0200, Ciprian Popovici wrote: > > > On Sat, 18 Dec 2004 11:07:37 -0600 Bruno Wolff III <bruno@wolff.to> > wrote: > > > > On Fri, Dec 17, 2004 at 11:10:12 -0000, > > > > Filip Wuytack <fwuytack@fgscapital.com> wrote: [question about mysql's special AUTO_INCREMENT on a secondary column in a multiple-column index] > > > > > > Here's a case where what he said would come in handy: arranging a > > > particular display order within the individual groups. You have the > unique > > > key for the entire table, but you need something like a serial > restricted > > > to just a group of rows. > > > > would a normal sequence not do if that was the only purpose? > > Not if you need the main key values to stay put. I am afraid I do not follow you. gnari
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