On 04/03/12, Jan Meyland Andersen (j...@agile.dk) wrote:
> How do I return an unknown resultset from a function
> 
> My main problem is that I do not know how many columns or the data
> type of the columns before runtime.
> It this possible at all?
> 
> I also tried to return the data as a text array but I also have
> trouble with that.

There is a section on this in the docs at (for instance)
http://www.postgresql.org/docs/8.4/static/xfunc-sql.html#XFUNC-OUTPUT-PARAMETERS

A specific example which may help is

CREATE FUNCTION new_emp() RETURNS emp AS $$
    SELECT ROW('None', 1000.0, 25, '(2,2)')::emp;
$$ LANGUAGE SQL;

Note that there are two ways of calling such a function. You probably
want the "SELECT *" form.

Rory

-- 
Rory Campbell-Lange
r...@campbell-lange.net

Campbell-Lange Workshop
www.campbell-lange.net
0207 6311 555
3 Tottenham Street London W1T 2AF
Registered in England No. 04551928

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