On Tuesday 1. June 2010 23.03.51 John Gage wrote:
> Thanks. I tried that _without_ the parentheses around the select
> statement and it didn't work.
>
> At the risk of further displaying ignorance, why are the parens
> necessary, what do they do?
I don't know the technical answer, but as an intuitively derived rule of
thumb: Whenever you need the output of a subselect in an outer query, put the
subselect in parentheses. It becomes second nature after a while.
regards,
--
Leif Biberg Kristensen
http://solumslekt.org/blog/
