作者: 
fitsky (Mr. Nobody)   
2012-10-30 20:19:27作業說明裡提到"creation of temp table is not allowed."
                "you have to write exactly one SQL statement."
  什麼是"exactly one SQL statement"?
  所以以下兩種code都不行嗎?
  1 SELECT temp.rating
    FROM ( SELECT ....) AS temp
    WHERE temp.average = (SELECT ... FROM ....)_
    (出自SQL講義第48頁)
  2 SELECT
    FROM
    WHERE temp IN ( SELECT FROM WHERE)
  謝謝