On Tue, 3 Jun 2008 09:41:27 -0400
"maria s" <psmg01@gmail.com> wrote:
> Thanks for all your replies.
>
> Actually I don't know the number of columns that I am going to
> return.
>
> I have 2 tables. For a single entry E1 in one table(t1), I have
> to fetch all the matching entries for E1 from the other
> table(t2), K1,..Kn. and finally the function should return E1,
> K1..Kn. So I don't know the number of columns that I am going to
> get.
>
> Is it possible to write a function that returns this kind of
> result?
Up to my knowledge as Bart wrote in pl/pgsql you'll have to specify
somewhere the return type: in the function or in the select calling
the function.
If you use sql (not pl/pgsql) function you shouldn't be obliged to
specify the return type.
But I haven't written enough sql function to actually remember how
it works.
If you post your tentative sql it could give us more clue.
--
Ivan Sergio Borgonovo
http://www.webthatworks.it