On 27.07.2007, at 10:48, Stefan Zweig wrote:
hi list,
this is my query:
select
*
from _g2977
where
id=floor(random() * (900));
in table _g2977 i have id(s) from 1 up to 900. i just want to
select one random dataset by the above query but i does not work.
actually i get sometime zero, sometimes one, sometimes two and
sometimes even three results back from the above query although i
thought it should give only one random dataset from the table.
what is wrong?
i appreciate any help.
thanks in advance, stefan
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SELECT * FROM _g2977 g,
(SELECT floor(random() * (900) as rnd) r
WHERE g.id = r.rnd
should work better, haven't tested though.
Kristo Kaiv
http://kaiv.wordpress.com (PostgreSQL blog)
