有学生表 Student(S# char(8), Sname char(10),...

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【单选题】

有学生表 Student(S# char(8), Sname char(10), Ssex char(2), Sage integer, D# char(2), Sclass char(6)) 。要检索学生表中“所有年龄小于等于 19 岁的学生的年龄及姓名”, SQL 语句正确的是 _________ 。

Select * From Student Where Sage <= 19;

Select Sname From Student Where Sage <= 19;

Select Sage, Sname From Student Where Sage <= 19;

Select Sage, Sname From Student;

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参考答案：

举一反三

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