From: | Philip Warner <pjw(at)rhyme(dot)com(dot)au> |
---|---|
To: | pgsql-sql(at)hub(dot)org |
Subject: | Subselect and limit/order? |
Date: | 2000-08-07 14:43:55 |
Message-ID: | 3.0.5.32.20000808004355.02772100@mail.rhyme.com.au |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-sql |
Just wondering why subselect expressions can not have a limit/order clause,
eg.
select id,(select id from tbl where id > ? order by id limit 1) as nextid
from tbl where id = ?;
is quite usefull.
It can obviously be done in two select statements, but I was just wondering
if it's an oversight or a planner problem?
----------------------------------------------------------------
Philip Warner | __---_____
Albatross Consulting Pty. Ltd. |----/ - \
(A.C.N. 008 659 498) | /(@) ______---_
Tel: (+61) 0500 83 82 81 | _________ \
Fax: (+61) 0500 83 82 82 | ___________ |
Http://www.rhyme.com.au | / \|
| --________--
PGP key available upon request, | /
and from pgp5.ai.mit.edu:11371 |/
From | Date | Subject | |
---|---|---|---|
Next Message | Ross J. Reedstrom | 2000-08-07 14:47:53 | Re: Functions too slow, even with iscachable? |
Previous Message | Philip Warner | 2000-08-07 12:12:38 | Re: Functions too slow, even with iscachable? |