On 4/11/07, Raymond O'Donnell <[EMAIL PROTECTED]> wrote:
Hi all,
This is probably a very simple one, but I just can't see the answer and
it's driving me nuts. I have a table holding details of academic terms,
and I need an SQL query such that for any given term I want to find the
next term by s
Merlin Moncure escribió:
> my suggestion to return the record in a field as a composite type is a
> non-standard trick (i think...do composite types exist in the sql
> standard?).
I think composite types are in the standard, yes, but they are a bit
different from what we have. I tried to read th
On 4/12/07, Raymond O'Donnell <[EMAIL PROTECTED]> wrote:
On 12/04/2007 18:01, Merlin Moncure wrote:
> I tested it and this is much faster than 'where exists' solution.
Is this an attribute of PostgreSQL in particular, or would it be true of
RDBMSs in general?
evaluation of subqueries is one p
On 12/04/2007 18:01, Merlin Moncure wrote:
I tested it and this is much faster than 'where exists' solution.
Is this an attribute of PostgreSQL in particular, or would it be true of
RDBMSs in general?
Thanks again,
Ray.
---
Raymo
On 4/12/07, Merlin Moncure <[EMAIL PROTECTED]> wrote:
On 4/12/07, Raymond O'Donnell <[EMAIL PROTECTED]> wrote:
> On 11/04/2007 21:15, Jon Sime wrote:
>
> >> This is probably a very simple one, but I just can't see the answer and
> >> it's driving me nuts. I have a table holding details of academi
On 4/12/07, Raymond O'Donnell <[EMAIL PROTECTED]> wrote:
On 11/04/2007 21:15, Jon Sime wrote:
>> This is probably a very simple one, but I just can't see the answer and
>> it's driving me nuts. I have a table holding details of academic terms,
Many thanks indeed to all who replied - I particula
On 11/04/2007 21:15, Jon Sime wrote:
This is probably a very simple one, but I just can't see the answer and
it's driving me nuts. I have a table holding details of academic terms,
Many thanks indeed to all who replied - I particularly like Jeff's
solution, and will use that one.
Regards,
Raymond O'Donnell wrote:
> This is probably a very simple one, but I just can't see the answer and
> it's driving me nuts. I have a table holding details of academic terms,
> and I need an SQL query such that for any given term I want to find the
> next term by starting date (or just NULL if there
You'll need to do something like this, called a correlated subquery:
Select t1.term_id, t1.term_name, t1.term_starts, t2.term_id as
next_term
From term t1, term t2
where t2.term_starts = (select min(t3.term_starts) from term t3 where
t3.term_starts > t1.term_starts)
-Original Message-
F
Is something like this too simple?
select term_id from terms where term_id > 2 order by term_starts limit 1;
or
select term_id from terms where term_starts > '2007-09-01' order by
term_starts limit 1;
depending on whether you have the term_id or the term_starts date.
Susan Cassidy
Raymond O
On 4/11/07, Raymond O'Donnell <[EMAIL PROTECTED]> wrote:
Hi all,
This is probably a very simple one, but I just can't see the answer and
it's driving me nuts. I have a table holding details of academic terms,
and I need an SQL query such that for any given term I want to find the
next term by s
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