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题目内容
（国家开放大学数据库应用技术）
查询语句中，错误的是（ ）。
单选题 (3 分) 3分
A.
SELECT Sno, COUNT(*) FROM SC GROUP BY Sno
B.
SELECT Sno FROM SC GROUP BY Sno WHERE COUNT(*) > 3
C.
SELECT Sno FROM SC GROUP BY Sno HAVING COUNT(*) > 3
D.
SELECT Sno FROM SC GROUP BY Sno
单选题 (3 分) 3分
A.
SELECT Sno, COUNT(*) FROM SC GROUP BY Sno
B.
SELECT Sno FROM SC GROUP BY Sno WHERE COUNT(*) > 3
C.
SELECT Sno FROM SC GROUP BY Sno HAVING COUNT(*) > 3
D.
SELECT Sno FROM SC GROUP BY Sno
参考答案