若要求“查詢選修了3門以上課程的學生的學生號”,正確的SQL語句是
若要求“查詢選修了3門以上課程的學生的學生號”,正確的SQL語句是
A.SELECT S# FROM SC GROUP BY S# WHERE COUNT(*)> 3
B.SELECT S# FROM SC GROUP BY S# HAVING COUNT(*)> 3
C.SELECT S# FROM SC ORDER BY S# WHERE COUNT(*)> 3
D.SELECT S# FROM SC ORDER BY S# HAVING COUNT(*)> 3
正確答案:C
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