問題詳情

40. Given the relation below

  what values will be retrieved by the following SQL statement?
SELECT A, B FROM X WHERE X.B = x.C
(A) 2,2
(B) 2,5
(C) 3,3
(D) 3.6
(E) 6.2

參考答案

答案：E
難度：計算中-1
書單：沒有書單，新增