-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 2005-03-15, Michael Fuhr scribbled these
curious markings:
>> I have a table whose rows are distinguished by a sequence. I'd like to
>> be able to, given a certain value of that sequence, retrieve the next
>> and previous values in relation to the given value. Couldn't find
>> anything in the docs for the version that I'm running, 8.0. Thanks in
>> advance.
>
> Maybe this example will help:
>
> CREATE TABLE foo (id integer PRIMARY KEY);
> INSERT INTO foo (id) VALUES (1);
> INSERT INTO foo (id) VALUES (2);
> INSERT INTO foo (id) VALUES (5);
> INSERT INTO foo (id) VALUES (6);
> INSERT INTO foo (id) VALUES (7);
>
> SELECT id FROM foo WHERE id < 5 ORDER BY id DESC LIMIT 1;
> id
> ----
> 2
> (1 row)
>
> SELECT id FROM foo WHERE id > 5 ORDER BY id LIMIT 1;
> id
> ----
> 6
> (1 row)
>
> Is that what you're after? If not then please give an example of
> what you'd like to do.
Yes, that is precisely what I want, and stated quite succinctly. Many
thanks indeed.
Best Regards,
Christopher Nehren
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.0 (FreeBSD)
iD8DBQFCN44Nk/lo7zvzJioRAvSDAJ4vFcNmHnrBJ32T+ljF/zb7kovY/ACgvptv
Afs5KTTEobI9UjY5vVQDwuA=
=PcHW
-----END PGP SIGNATURE-----
--
I abhor a system designed for the "user", if that word is a coded
pejorative meaning "stupid and unsophisticated". -- Ken Thompson
If you ask the wrong questions, you get answers like "42" and "God".
Unix is user friendly. However, it isn't idiot friendly.