มากที่สุดกี่สโมสรที่ไม่มีลีก ?ไม่จำเป็นต้องใช้ตารางทั้งหมด
how many clubs at most do n't have leagues ?It is not neccessary to use all the tables.
 table_204_923:  id [ number]  "club" [ text]  "entered\nadministration" [ text]  "exited\nadministration" [ text]  "league(s)" [ text]  "deduction(s)" [ text] 
SELECT COUNT("club") FROM table_204_923 WHERE "league(s)" IS NULL