00-数据初始化

• 自定义一个数据库，然后导入以下SQL即可

  • /*
    --1.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
    
    --2.课程表
    Course(CID,Cname,TID) --CID --课程编号,Cname 课程名称,TID 教师编号
    
    --3.教师表
    Teacher(TID,Tname) --TID 教师编号,Tname 教师姓名
    
    --4.成绩表
    SC(SID,CID,score) --SID 学生编号,CID 课程编号,score 分数
    */
    
    -- 创建测试数据
    create table Student(SID varchar(10),Sname nvarchar(10),Sage datetime,Ssex nvarchar(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');
    create table Course(CID varchar(10),Cname nvarchar(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');
    create table Teacher(TID varchar(10),Tname nvarchar(10));
    insert into Teacher values('01' , '张三');
    insert into Teacher values('02' , '李四');
    insert into Teacher values('03' , '王五');
    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);