Return more than a record

create or replace function ExpensiveDepartments() returns setof table1 as 
'
declare    r table1%rowtype;
begin    for r in select departmentid, sum(salary) as totalsalary        from GetEmployees() group by departmentid loop
        if (r.totalsalary > 70000) then            r.totalsalary := CAST(r.totalsalary * 1.75 as int8);        else            r.totalsalary := CAST(r.totalsalary * 1.5 as int8);        end if;
        if (r.totalsalary > 100000) then            return next r.departmentid;        end if;
    end loop;    return;
end
' 
language 'plpgsql';