I have a peculiar problem that I can't reproduce on a trivial database:
select product, priority, count(*) as completed from issue
where
product = 'DIS'
and create_date < '1-Aug-2000' and finish_date >= '1-Aug-2000' or
finish_date is null
group by product, priority;
This produces a list of all products - not just 'DIS'. If I put the last
two clauses in parnthesis, then it works as expected:
select product, priority, count(*) as completed from issue
where
product = 'DIS'
and create_date < '1-Aug-2000' and (finish_date >= '1-Aug-2000' or
finish_date is null)
group by product, priority;
Which makes me think that the precedence of 'or' is not what I expected. Is
this a feature? If so, the fact that I get precisely the opposite behaviour
in simple test databases must be a bug, I think.
Any help or explanation would be appreciated...
----------------------------------------------------------------
Philip Warner | __---_____
Albatross Consulting Pty. Ltd. |----/ - \
(A.B.N. 75 008 659 498) | /(@) ______---_
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 |/
