ใครเป็นพรีเซนเตอร์หลักก่อน barbara d'urso ?ไม่จำเป็นต้องใช้โต๊ะทั้งหมดเลย
who was the main presenter before barbara d'urso ?It is not neccessary to use all the tables.
 table_203_397:  id [ number]  "series" [ text]  "days" [ number]  "housemates" [ number]  "winner" [ text]  "liveshow\naudience\nmillions" [ number] 
SELECT "main presenter" FROM table_203_397 WHERE "launch date" < (SELECT "launch date" FROM table_203_397 WHERE "main presenter" = "barbara d'urso") ORDER BY "launch date" DESC LIMIT 1