文档介绍：数据库练****题及答案 SQL 查询练****找了好久的查询练****附有答案 CREATE TABLE STUDENT (SNO VARCHAR(3) NOT NULL, SNAME VARCHAR(4) NOT NULL, SSEX VARCHAR(2) NOT NULL, SBIRTHDAY DATETIME, CLASS VARCHAR(5)) go CREATE TABLE COURSE (CNO VARCHAR(5) NOT NULL, CNAME VARCHAR(10) NOT NULL, TNO VARCHAR(10) NOT NULL) go CREATE TABLE SCORE (SNO VARCHAR(3) NOT NULL, CNO VARCHAR(5) NOT NULL, DEGREE NUMERIC(10, 1) NOT NULL) go CREATE TABLE TEACHER (TNO VARCHAR(3) NOT NULL, TNAME VARCHAR(4) NOT NULL, TSEX VARCHAR(2) NOT NULL, TBIRTHDAY DATETIME NOT NULL, PROF VARCHAR(6), DEPART VARCHAR(10) NOT NULL) INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (108 ,' 曾华' ,'男' ,1977-09-01,95033); INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (105 ,' 匡明' ,'男' ,1975-10-02,95031); INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (107 ,' 王丽' ,'女' ,1976-01-23,95033); INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (101 ,' 李军' ,'男' ,1976-02-20,95033); INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (109 ,' 王芳' ,'女' ,1975-02-10,95031); INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (103 ,' 陆君' ,'男' ,1974-06-03,95031); GO INSERT INTO AME,TNO)VALUES ('3-105' ,' 计算机导论',825) INSERT INTO AME,TNO)VALUES ('3-245' ,' 操作系统' ,804); INSERT INTO AME,TNO)VALUES ('6-166' ,' 数据电路' ,856); INSERT INTO AME,TNO)VALUES ('9-888' ,' 高等数学' ,100); GO INSERT INTO SCORE(O,DEGREE)VALUES (103,'3-245',