查询非计算机系中比计算机系中年龄最小者年龄大或相等的学生姓名，不正确的查询语句是：
A: SELECT SnameFROM Student S1WHERE NOT EXISTS (SELECT *FROM Student S2WHERE S2.Sdept = 'CS'AND S1.Sage ;= S2.Sage)AND Sdept != 'CS';
B: SELECT SnameFROM StudentWHERE Sage >;= (SELECT MIN(Sage) FROMStudentWHERE Sdept = 'CS')AND Sdept != 'CS';
C: SELECT SnameFROM StudentWHERE Sage >;= ANY (SELECT SageFROM StudentWHERE Sdept = 'CS')AND Sdept != 'CS';
A: SELECT SnameFROM Student S1WHERE NOT EXISTS (SELECT *FROM Student S2WHERE S2.Sdept = 'CS'AND S1.Sage ;= S2.Sage)AND Sdept != 'CS';
B: SELECT SnameFROM StudentWHERE Sage >;= (SELECT MIN(Sage) FROMStudentWHERE Sdept = 'CS')AND Sdept != 'CS';
C: SELECT SnameFROM StudentWHERE Sage >;= ANY (SELECT SageFROM StudentWHERE Sdept = 'CS')AND Sdept != 'CS';
举一反三
- 选择题：在所有学生中查询比计算机系学生平均年龄大的学生姓名，可以使用的查询语句是： A: SELECT SnameFROM StudentWHERE Sage >; (SELECT AVG(Sage)FROM Student);WHERE Sdept = 'CS' B: SELECT SnameFROM StudentWHERE Sage >; AVG(SELECT SageFROM StudentWHERE Sdept = 'CS'); C: SELECT SnameFROM StudentWHERE Sage >; (SELECT AVG(Sage)FROM StudentWHERE Sdept = 'CS'); D: SELECT SnameFROM StudentWHERE AVG(Sage) >; (SELECT SageFROM StudentWHERE Sdept = 'CS');
- 选择题：在所有学生中查询比计算机系学生平均年龄大的学生姓名，可以使用的查询语句是： A: SELECT SnameFROM StudentWHERE Sage > (SELECT AVG(Sage)FROM Student);WHERE Sdept = 'CS' B: SELECT SnameFROM StudentWHERE Sage > AVG(SELECT SageFROM StudentWHERE Sdept = 'CS'); C: SELECT SnameFROM StudentWHERE Sage > (SELECT AVG(Sage)FROM StudentWHERE Sdept = 'CS'); D: SELECT SnameFROM StudentWHERE AVG(Sage) > (SELECT SageFROM StudentWHERE Sdept = 'CS');
- 对教材79页学生表的查询，若描述条件‘年龄大于计算机系某个学生的年龄’，可以表示为： A: WHERE sage>ANY(SELECT sage FROM student WHERE sdept='CS') B: WHERE sage>SOME(SELECT sage FROM student WHERE sdept='CS') C: WHERE sage>ALL(SELECT sage FROM student WHERE sdept='CS') D: WHERE sage>(SELECT MIN(sage) FROM student WHERE sdept='CS'))
- 在所有学生中查询比计算机系所有学生年龄都要大的学生姓名,正确的查询语句是___________________。 A: SELECT Sname FROM Student WHERE Sage > ( SELECT MAX(Sage) FROM Student WHERE Sdept = 'CS'); B: SELECT Sname FROM Student WHERE Sage > ALL ( SELECT Sage FROM Student WHERE Sdept = 'CS'); C: SELECT Sname FROM Student S1 WHERE EXISTS ( SELECT Sage FROM Student S2 WHERE Sdept = 'CS' AND S1.Sage > S2.Sage); D: SELECT Sname FROM Student S1 WHERE NOT EXISTS ( SELECT * FROM Student S2 WHERE Sdept = 'CS' AND S1.Sage <= S2.Sage);
- 使用教学（STC）数据库，与如下查询语句等价的是（ ）。 SELECT *FROM Student WHERE Sdept = 'CS' EXCEPT SELECT * FROM Student WHERE Sage <= 19; A: SELECT * FROM Student WHERE Sdept = 'CS' AND Sage > 19 B: SELECT * FROM Student WHERE Sdept = 'CS' AND Sage <= 19 C: SELECT * FROM Student WHERE Sdept = 'CS' OR Sage <= 19 D: SELECT * FROM Student WHERE Sdept = 'CS' OR Sage > 19