问题
填空题
[问题3] 用SQL语言写出查询：查询年龄不在20～23岁(包括20岁和23岁)之间的学生的姓名，系别和年龄。
答案
参考答案：SELECT Shame, Sdept, Sage FROM Student
解析：
WHERE Sage NOT BETWEEN 20 AND 23或SELECT Shame, Sdept, Sage FROM Student WHERE NOT (Sage BETWEEN 20 AND 23 )或SELECT Sname, Sdept, Sage FROM Student WHERE (Sage <20) AND (Sage >23)