CREATE 
OR REPLACE FUNCTION public.search_owners (search text) RETURNS SETOF owners LANGUAGE plpgsql STABLE AS $function$ 
BEGIN
   IF search = '' 
THEN
   RETURN query 
   SELECT
      * 
   FROM
      owners;
ELSE
   RETURN query 
   SELECT
      * 
   FROM
      owners 
   WHERE
      (
         ownr_fn || ' ' || ownr_ln
      )
      ILIKE '%' || search || '%' 
      OR ownr_ln ILIKE '%' || search || '%' 
      OR ownr_fn ILIKE '%' || search || '%' 
      OR ownr_fn ILIKE '%' || search || '%' 
      OR ownr_co_nm ILIKE '%' || search || '%' 
      OR ownr_ph1 ILIKE '%' || search || '%' 
      OR ownr_ph2 ILIKE '%' || search || '%' 
      OR ownr_addr1 ILIKE '%' || search || '%' 
   ORDER BY
(ownr_fn || ' ' || ownr_ln) ILIKE '%' || search || '%' 
      OR NULL,
      ownr_ln ILIKE '%' || search || '%' 
      OR NULL,
      ownr_fn ILIKE '%' || search || '%' 
      OR NULL,
      ownr_co_nm ILIKE '%' || search || '%' 
      OR NULL,
      ownr_fn ILIKE '%' || search || '%' 
      OR NULL,
      ownr_ph1 ILIKE '%' || search || '%' 
      OR NULL,
      ownr_ph2 ILIKE '%' || search || '%' 
      OR NULL,
      ownr_addr1 ILIKE '%' || search || '%' 
      OR NULL;
END
IF;
END
$function$;