- . -
(2)检索选修了2号课程学生的学号、XX、成绩,并按成绩降序排序。 SELECT Student.Sno,Sname,Grade FROM Student,SC
WHERE Student.Sno=SC.Sno AND o=’2’ ORDER BY Grade DESC;
(3)把对Course表的插入权限授予给用户U2. GRANT INSERT ON TABLE Course TO U2;
(4)查询选修了课程名为‘数据结构’的学生的学号和XX。 SELECT Sno,Sname FROM Student WHERE Sno IN (SELECT Sno FROM SC WHERE o IN (SELECT o
FROM Course WHERE ame=‘数据结构’)); 或
SELECT Student.Sno,Sname FROM Student,SC,Course
WHERE Student.Sno=SC.Sno AND SC.o=Course.o AND Course.ame=’数据结构’; (5)建立工程系选修了1号课程的学生的视图,视图包含学生学号、XX、成绩
- . .考试资料
- . -
信息的。
CREATE VIEW IS-S1(Sno,Sname,Grade) AS
SELECT Student.Sno,Sname,Grade FROM Student,SC
- WHERE Student.Sno=SC.Sno AND Sdept=‘工程系’ AND SC.o=‘1’; . .考试资料