题目内容

对于学生信息表S(SNUMBER, SNAME, SEX, AGE, DEPT)(STUDENT由学号SNO,姓名SNAME,性别SEX,年龄AGE,所在系DEPT5个属性组成,其中SNUMBER为主码),求年龄20~23岁之间的学生姓名和年龄,正确的语句是( )。

A. SELECT SNAME, AGE FRQM S WHERE AGE>20 OR AGE<23
B. SELECT SNAME, AGE FROM S WHERE AGE BETWEEN 20 AND 23
C. SELECT FROM S WHERE AGE BETWEEN 20 AND 23
D. 以上均不正确

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