SQL Server 基础之《学生表-教师表-课程表-选课表》（二）

表结构

--学生表tblStudent（编号StuId、姓名StuName、年龄StuAge、性别StuSex）

--课程表tblCourse（课程编号CourseId、课程名称CourseName、教师编号TeaId）

--成绩表tblScore（学生编号StuId、课程编号CourseId、成绩Score）

--教师表tblTeacher（教师编号TeaId、姓名TeaName）

CREATE TABLE tblStudent 
  ( 
     StuId   INT, 
     StuName nvarchar(32), 
     StuAge  INT, 
     StuSex  nvarchar(8) 
  ) 

CREATE TABLE tblCourse 
  ( 
     CourseId    INT, 
     CourseName nvarchar(32), 
     TeaId    INT 
  ) 

CREATE TABLE tblScore 
  ( 
     StuId   INT, 
     CourseId    INT, 
     Score INT 
  ) 

CREATE TABLE tblTeacher 
  ( 
     TeaId    INT, 
     TeaName nvarchar(16) 
  )

  
  insert into tblStudent select 1,N'刘一',18,N'男' union all
 select 2,N'钱二',19,N'女' union all
 select 3,N'张三',17,N'男' union all
 select 4,N'李四',18,N'女' union all
 select 5,N'王五',17,N'男' union all
 select 6,N'赵六',19,N'女' 

 
 insert into tblTeacher select 1,N'叶平' union all
 select 2,N'贺高' union all
 select 3,N'杨艳' union all
 select 4,N'周磊'
 
 insert into tblCourse select 1,N'语文',1 union all
 select 2,N'数学',2 union all
 select 3,N'英语',3 union all
 select 4,N'物理',4
 
 insert into tblScore 
 select 1,1,56 union all 
 select 1,2,78 union all 
 select 1,3,67 union all 
 select 1,4,58 union all 
 select 2,1,79 union all 
 select 2,2,81 union all 
 select 2,3,92 union all 
 select 2,4,68 union all 
 select 3,1,91 union all 
 select 3,2,47 union all 
 select 3,3,88 union all 
 select 3,4,56 union all 
 select 4,2,88 union all 
 select 4,3,90 union all 
 select 4,4,93 union all 
 select 5,1,46 union all 
 select 5,3,78 union all 
 select 5,4,53 union all 
 select 6,1,35 union all 
 select 6,2,68 union all 
 select 6,4,71

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https://blog.csdn.net/sujiacheng_123/article/details/53928474