MYSql Top 10 e altri totali

Per la cronaca, sono d'accordo con il commento di @DamienBlack, tuttavia se doveva essere eseguito in una query un UNION ALL potrebbe fare il trucco:

(
  SELECT VENDOR_fullname as name, SUM(POTENTIAL_RECOVERY) as recovery
  FROM COMPLETE
  GROUP BY VENDOR_fullname
  ORDER BY SUM(POTENTIAL_RECOVERY) DESC
  LIMIT 10
)
UNION ALL
(
  SELECT 'All others' as name, SUM(subtotal) as recovery
  FROM 
  (
    SELECT SUM(POTENTIAL_RECOVERY)
    FROM COMPLETE
    GROUP BY VENDOR_fullname
    ORDER BY SUM(POTENTIAL_RECOVERY) DESC
    LIMIT 10, 18446744073709551615
  ) as subtotal;
)