Re: BUG #1083: Insert query reordering interacts badly with

I am going to try to move this over the sql list, since it doesn't belong
on bugs.

On Tue, Feb 24, 2004 at 23:47:48 +1300,
Martin Langhoff <martin(at)catalyst(dot)net(dot)nz> wrote:
> Tom Lane wrote:
>
> >How about
> >
> >SELECT nextval('seq'); -- ignore result
> >
> >INSERT INTO ... VALUES (currval('seq'), currval('seq'));
> >
> >
>
> Well, it works for my sample case, I have to agree. Maybe I should
> mention that I tried to boil down the bugreport to the simplest repro
> case I could.
>
> My actual SQL looks roughly like
>
> INSERT INTO destination (record_id, page, row)
> SELECT
> (SELECT record_id FROM record ORDERED BY name),
> (NEXTVAL('seq') / 200),
> (CURRVAL('seq') % 200)
>
> While I have a workaround, I am definitely curious as to whether there
> is actually a way to do it. Thanks for your patience.

I think the following will do what you want:

INSERT INTO destination (record_id, page, row)
SELECT record_id, seq/200, seq%200 FROM
(SELECT record_id, nextval('seq') as seq FROM record ORDERED BY name);