有如下关系:S(S#, SN, SEX, AGE, DEPT)C(C#, CN)SC(S#, C#, GRADE)其中:S#为学号,SN为姓名,SEX为性别,AGE为年龄,DEPT为系别,C#为课程号,CN为课程名,GRADE为成绩。检索所有比“王华”年龄大的学生姓名、年龄和性别。正确的SELECT语句是( )。
选项:
A: SELECT SN, AGE, SEX FROM S WHERE SN=’王华’;
B:SELECT SN, AGE, SEX FROM S WHERE AGE>(SELECT AGE FROM S WHERE SN=’王华’);
C:SELECT SN, AGE, SEX FROM S WHERE AGE IN(SELECT AGE FROM S WHERE SN=’王华’) ;
D:SELECT SN, AGE, SEX FROM S WHERE AGE>王华.AGE
发布时间:2024-03-30 09:58:24