hi every one
i have created this simple function which returns a column of table , i have used simple SELECT statement , i simply want to know how can i achieve the same task with the help of cursor
CREATE OR REPLACE FUNCTION foo(id int)
returns table(cust_id int) as
$BODY$
BEGIN
return query Select userid from customer where proname ='shampoo';
END;
$BODY$
LANGUAGE plpgsql;
how can i write a cursor which should return all the custid who had proname shampoo . i shall be very thankful to you