ใครได้เหรียญทองมากกว่าสหรัฐอเมริกา ?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
who won more gold medals than the united states ?It is not neccessary to use all the tables.
 table_203_812:  id [ number]  "rank" [ number]  "nation" [ text]  "gold" [ number]  "silver" [ number]  "bronze" [ number]  "total" [ number] 
SELECT "nation" FROM table_203_812 WHERE "gold" > (SELECT "gold" FROM table_203_812 WHERE "nation" = 'united states')