阿摩線上測驗
12.哪個陳述式會建立複合索引
鍵？
(A)CREATETABLE Order
(OrderID INTEGER,
Orderltem lDINTEGER,
PRIMARYKEY(OrderID,OrderltemID))
(B)CREATETABLE Order
(OrderIDINTEGERPRIMARYKEY,
OrderltemIDINTEGERPRIMARYKEY)
(C)CREATETABLE Order
(PrderIDINTEGER,
OrderltemIDINTEGER,
PRIMARYKEY)
(D)CREATETABLE Order
(OrderIDINTEGER,
OrderltemIDINTEGER,
PRIMARYKEYOrderID,
PRIMARYKEYOrderltemID)
答案：登入後查看
統計： A(195), B(9), C(13), D(26), E(0) #2260236
統計： A(195), B(9), C(13), D(26), E(0) #2260236