【简答题】设有学生表student(sno,sname,sage,smajor),字段含义分别为学生学号、姓名、年龄、专业。现有语句: SELECT sno,sname,sage,smajor FROM student ORDER BY smajor,sage DESC 执行上述语句,其检索结果()。A. 按smajor升序、sage降序排列 B. 按smajor降序、sage升序排列 C. 按smajo...
【单选题】设有学生表student(sno,sname,sage,smajor),字段含义分别为学生学号、姓名、年龄、专业。现有语句: SELECT sno,sname,sage, smajor FROM student ORDER BY smajor, sage DESC 执行上述语句,其检索结果( )