Postgres: Возврат типизированной raw-строки

* Пример на диалекте SQL

CREATE OR REPLACE FUNCTION client.fx_admin_row(integer)
  RETURNS client.admins AS
$BODY$
--
-- Получение строки admin
--
    SELECT * FROM client.admins WHERE admin_id=$1;
--
$BODY$
  LANGUAGE 'sql' VOLATILE SECURITY DEFINER
  COST 100;
ALTER FUNCTION client.fx_admin_row(integer) OWNER TO sk4_admin;
GRANT EXECUTE ON FUNCTION client.fx_admin_row(integer) TO sk4_admin;
GRANT EXECUTE ON FUNCTION client.fx_admin_row(integer) TO public;

* Пример на диалекте plpgsql

CREATE OR REPLACE FUNCTION client.fx_user_row(id integer)
  RETURNS client.users AS
$BODY$
--
-- Получение строки user
--
DECLARE
   r client.users%rowtype;
BEGIN
   IF NOT EXISTS(SELECT * FROM client.users WHERE user_id=$1) THEN
      RAISE EXCEPTION 'User "%" not found!', $1;
   END IF;
   SELECT * INTO r FROM client.users WHERE user_id=$1;
   RETURN r;
END
--
$BODY$
  LANGUAGE 'plpgsql' VOLATILE SECURITY DEFINER
  COST 100;
ALTER FUNCTION client.fx_user_row(integer) OWNER TO sk4_admin;
GRANT EXECUTE ON FUNCTION client.fx_user_row(integer) TO sk4_admin;
GRANT EXECUTE ON FUNCTION client.fx_user_row(integer) TO public;