MySQL练习1_建表

 1 create database school;
 2
 3 create table Student     #学生表
 4 (
 5    SNO char(3) not null primary key,  #学号（主码）
 6    Sname char(8) not null ,  #学生姓名
 7    Ssex char(2) not null,     #学生性别
 8    Sbirthday datetime,        #学生出生年月
 9    Class char(5)              #学生所在班级
10 );
11 create table Course                   #课程表
12 (
13   Cno char(5) not null primary key,  #课程号（主码）
14   Cname varchar(10) not null,        #课程名称
15   Tno char(3) not null               #教工编号（外码）
16 ) ;
17 create table Scorse                  #成绩表
18 (
19
20   Sno char(3) not null,    #学号（外码）
21   Cno char(5) not null,    #课程号（外码）
22   Degree decimal(4,1)      #成绩
23 );
24 create table Teacher                   #教师表
25 (
26   Tno char(3) not null primary key,    #教工编号（主码）
27   Tname char(4) not null,              #教工姓名
28   Tsex char(2) not null,               #教工性别
29   Tbirthday datetime,                  #教工出生年月
30   Prof char(6),                        #职称
31   Depart varchar(10) not null          #教工所在部门
32 );
33 insert into Student values(‘108‘,    ‘曾华‘,    ‘男‘,    ‘1977-09-01‘,    ‘95033‘);
34 insert into Student values(‘105‘,    ‘匡明‘,    ‘男‘,    ‘1975-10-02‘,    ‘95031‘);
35 insert into Student VALUES(‘107‘,    ‘王丽‘,    ‘女‘,    ‘1976-01-23‘,    ‘95033‘);
36 insert into Student VALUES(‘101‘,    ‘李军‘,    ‘男‘,    ‘1976-02-20‘,    ‘95033‘);
37 insert into Student VALUES(‘109‘,    ‘王芳‘,    ‘女‘,    ‘1975-02-10‘,    ‘95031‘);
38 insert into Student VALUES(‘103‘,    ‘陆君‘,    ‘男‘,    ‘1974-06-03‘,    ‘95031‘);
39 insert into Course  VALUES(‘3-105‘,    ‘计算机导论‘,    ‘825‘);
40 insert into Course  VALUES(‘3-245‘,    ‘操作系统‘,    ‘804‘);
41 insert into Course  VALUES(‘6-166‘,    ‘数字电路‘,    ‘856‘);
42 insert into Course  VALUES(‘9-888‘,    ‘高等数学‘,    ‘831‘);
43
44 insert into Score values(‘103‘,    ‘3-245‘,‘86‘);
45 insert into Score values(‘105‘,    ‘3-245‘,‘75‘);
46 insert into Score values(‘109‘,    ‘3-245‘    ‘68‘);
47 insert into Score values(‘103‘,    ‘3-105‘,‘92‘);
48 insert into Score values(‘105‘,    ‘3-105‘,‘88‘);
49 insert into Score values(‘109‘,    ‘3-105‘,‘76‘);
50 insert into Score values(‘101‘,    ‘3-105‘,‘64‘);
51 insert into Score values(‘107‘,    ‘3-105‘    ‘91‘);
52 insert into Score values(‘108‘,    ‘3-105‘,‘78‘);
53 insert into Score values(‘101‘,    ‘6-166‘,‘85‘);
54 insert into Score values(‘107‘,    ‘6-166‘,‘79‘);
55 insert into Score values(‘108‘,    ‘6-166‘,‘81‘);
56
57 insert into Teacher values(‘804‘,‘李诚‘,‘男‘,‘1958-12-02‘,‘副教授‘,‘计算机系‘);
58 insert into Teacher values(‘856‘,‘张旭‘,‘男‘,‘1969-03-12‘,‘讲师‘,‘电子工程系‘);
59 insert into Teacher values(‘825‘,‘王萍‘,‘女‘,‘1972-05-05‘,‘助教‘,‘计算机系‘);
60 insert into Teacher values(‘831‘,‘刘冰‘,‘女‘,‘1977-08-14‘,‘助教‘,‘电子工程系‘);
61
62 insert into Score values(‘109‘,    ‘3-245‘,    ‘68‘);
63 insert into Score values(‘103‘,    ‘3-105‘,    ‘92‘);
64 insert into Score values(‘105‘,    ‘3-105‘,        ‘88‘);
65 insert into Score values(‘109‘,    ‘3-105‘,    ‘76‘);
66 insert into Score values(‘101‘,    ‘3-105‘,    ‘64‘);
67 insert into Score values(‘107‘,    ‘3-105‘,    ‘91‘);
68 insert into Score values(‘108‘,    ‘3-105‘,    ‘78‘);
69 insert into Score values(‘101‘,    ‘6-166‘,    ‘85‘);
70 insert into Score values(‘107‘,    ‘6-166‘,    ‘79‘);
71 insert into Score values(‘108‘,    ‘6-166‘,    ‘81‘);
72
73 insert into Teacher VALUES(‘804‘,    ‘李诚‘,    ‘男‘,    ‘1958-12-02‘,    ‘副教授‘,‘计算机系‘);
74 insert into Teacher VALUES(‘856‘,    ‘张旭‘,    ‘男‘,    ‘1969-03-12‘,    ‘讲师‘,    ‘电子工程系‘);
75 insert into Teacher VALUES(‘825‘,    ‘王萍‘,    ‘女‘,    ‘1972-05-05‘,    ‘助教‘,    ‘计算机系‘);
76 insert into Teacher VALUES(‘831‘,    ‘刘冰‘,    ‘女‘,    ‘1977-08-14‘,    ‘助教‘,    ‘电子工程系‘)

1 create table grade(low  int(3),upp  int(3),rank  char(1));
2 insert into grade values(90,100,‘A‘);
3 insert into grade values(80,89,‘B‘);
4 insert into grade values(70,79,‘C‘);
5 insert into grade values(60,69,‘D‘);
6 insert into grade values(0,59,‘E‘)