
下列為資料表score的結構: 欲找出國語與數學分數皆在80~90範圍名單所使用的SQL命令為:
(A)Select from score where (chin>=80 and chin<=90) or (math>=80 and math<=90)
(B)Select from score where (chin>=80 or chin<=90) or (math>=80 or math<=90)
(C)Select from score where (chin>=80 or chin<=90) and (math>=80 or math<=90)
(D)Select from score where (chin>=80 and chin<=90) and (math>=80 and math<=90)
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統計: A(30), B(15), C(57), D(280), E(1) #61474
統計: A(30), B(15), C(57), D(280), E(1) #61474
詳解 (共 2 筆)
#405739
C的意思是國文及數學大於80 或小於90
D的意思是國文及數學成績介於80~90之間
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#397565
這題c和d 有什麼不同
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