create or replace function mmm() returns setof record as
'
declare
rec record;
begin
FOR rec IN SELECT foo.fooid,foo.foosubid,foo.fooname ,people_data.dk_anrede,dk_name_firma FROM foo inner join people_data on foo.fooid = people_data.dk_id LOOP
RETURN next rec;
END LOOP;
return NULL;
end;'language 'plpgsql';
select * from mmm() a(a int4,b int4,c text,d varchar, e varchar) ;