10-5 查询全部学生都选修的课程的课程号与课程名

查询全部学生都选修的课程的课程号与课程名

提示：请使用SELECT语句作答。

表结构:

CREATE TABLE STUDENT( SNO CHAR(5) PRIMARY KEY,SNAME VARCHAR(20),SAGE SMALLINT CHECK(SAGE>=15 AND SAGE<=45),SSEX CHAR(2) DEFAULT '男' CHECK(SSEX='男' OR SSEX='女'),SDEPT CHAR(2));CREATE TABLE COURSE( CNO CHAR(2) PRIMARY KEY,CNAME VARCHAR(20),CPNO CHAR(2),CCREDIT SMALLINT);CREATE TABLE SC( SNO CHAR(5) NOT NULL,CNO CHAR(2) NOT NULL,GRADE SMALLINT CHECK((GRADE IS NULL) OR (GRADE BETWEEN 0 AND 100)),PRIMARY KEY(SNO,CNO),FOREIGN KEY(SNO) REFERENCES STUDENT(SNO),FOREIGN KEY(CNO) REFERENCES COURSE(CNO));

代码如下：

SELECT COURSE.CNO,COURSE.CNAMEFROM COURSEWHERE CNO IN(SELECT DISTINCT CNOFROM SCGROUP BY CNOHAVING COUNT(SNO)=(SELECT COUNT(SNO) FROM STUDENT))