CREATE OR REPLACE FUNCTION voting.show_fn(p1 IN integer, p2 OUT VARCHAR, p3 OUT NUMERIC)
returns setof RECORD AS
$BODY$
declare
rec_1   RECORD;
maxel int;
begin
   FOR rec_1 IN (select voting.fields_tb.name, voting.fields_tb.summ from voting.fields_tb where $ 1 =voting.fields_tb.id_voting)
   LOOP
      p2 := rec_1.name;
      p3 := rec_1.summ;
      RETURN NEXT;
   END LOOP;

   RETURN;
end;
$BODY$
LANGUAGE 'plpgsql' VOLATILE;

SELECT * FROM voting.show_fn( 100 );