Mysql 50题

测试数据表

• 学生表

 

• student(Sid,Sname,Sage,Ssex)

 

• • 　　Sid 学生编号,Sname 学生姓名,Sage 出生年月,Ssex 学生性别

 

• • 　　创建学生表表,添加对应的测试数据,测试数据如下

create table student(Sid varchar(10),Sname varchar(10),Sage datetime,Ssex varchar(10));
insert into student values('01' , '赵雷' , '1990-01-01' , '男');
insert into student values('02' , '钱电' , '1990-12-21' , '男');
insert into student values('03' , '孙风' , '1990-05-20' , '男');
insert into student values('04' , '李云' , '1990-08-06' , '男');
insert into student values('05' , '周梅' , '1991-12-01' , '女');
insert into student values('06' , '吴兰' , '1992-03-01' , '女');
insert into student values('07' , '郑竹' , '1989-07-01' , '女');
insert into student values('08' , '王菊' , '1990-01-20' , '女');

• 课程表

 

• course(Cid,Cname,Tid)

• • 　　Cid 课程编号,Cname 课程名称,Tid 教师编号
  • 　　创建学课程表,添加对应的测试数据,测试数据如下

 

create table course(Cid varchar(10),Cname varchar(10),Tid varchar(10));
insert into course values('01' , '语文' , '02');
insert into course values('02' , '数学' , '01');
insert into course values('03' , '英语' , '03');

• 教师表

 

• teacher(Tid,Tname)

 

• • 　　Tid 教师编号,Tname 并5教师姓名

 

• • 　　创建学教师表,添加对应的测试数据,测试数据如下

create table teacher(Tid varchar(10),Tname varchar(10));
insert into teacher values('01' , '张三');
insert into teacher values('02' , '李四');
insert into teacher values('03' , '王五');

• 成绩表

  • sc(Sid,Cid,score)

    • Sid 学生编号,Cid 课程编号,score分数
    • 创建学成绩表,添加对应的测试数据,测试数据如下

create table sc(Sid varchar(10),Cid varchar(10),score decimal(18,1));
insert into sc values('01' , '01' , 80);
insert into sc values('01' , '02' , 90);
insert into sc values('01' , '03' , 99);
insert into sc values('02' , '01' , 70);
insert into sc values('02' , '02' , 60);
insert into sc values('02' , '03' , 80);
insert into sc values('03' , '01' , 80);
insert into sc values('03' , '02' , 80);
insert into sc values('03' , '03' , 80);
insert into sc values('04' , '01' , 50);
insert into sc values('04' , '02' , 30);
insert into sc values('04' , '03' , 20);
insert into sc values('05' , '01' , 76);
insert into sc values('05' , '02' , 87);
insert into sc values('06' , '01' , 31);
insert into sc values('06' , '03' , 34);
insert into sc values('07' , '02' , 89);
insert into sc values('07' , '03' , 98);