zoukankan      html  css  js  c++  java
  • SQL基础四(例子)

    ------------------------------------------------
    --分别创建student/course/score表
    
    Create table student
    (
    mid char(10) not null primary key,
    mname char(50) not null,
    )
    
    Create table course
    (
    fid char(10) not null primary key,
    fname char(50) not null,
    )
    
    Create table score
    (
    Sid int identity(1,1) primary key,
    fid char(10) not null,
    mid char(10) not null,
    score int,
    foreign key(mid) references student(mid),
    foreign key(fid) references course(fid)
    )
    ------------------------------------------------------
    --
    --往studnt表插入数据
    insert into student(mid,mname) values('M001','张三')
    insert into student(mid,mname) values('M002','李四')
    insert into student(mid,mname) values('M003','王五')
    insert into student(mid,mname) values('M004','顺六')
    -------------------------------------------------------
    --
    --往scourse表插入数据
    insert into course(fid,fname) values('F001','语文')
    insert into course(fid,fname) values('F002','数学')
    insert into course(fid,fname) values('F003','英语')
    insert into course(fid,fname) values('F004','历史')
    -------------------------------------------------------
    --
    --往score表插入数据
    insert into score(fid,mid,score) values('F001','M001',78)
    insert into score(fid,mid,score) values('F002','M001',78)
    insert into score(fid,mid,score) values('F003','M001',78)
    insert into score(fid,mid,score) values('F004','M001',78)
    
    insert into score(fid,mid,score) values('F001','M002',58)
    insert into score(fid,mid,score) values('F002','M002',58)
    insert into score(fid,mid,score) values('F003','M002',68)
    insert into score(fid,mid,score) values('F004','M002',98)
    
    insert into score(fid,mid,score) values('F001','M003',74)
    insert into score(fid,mid,score) values('F002','M003',74)
    insert into score(fid,mid,score) values('F003','M003',71)
    insert into score(fid,mid,score) values('F004','M003',73)
    
    insert into score(fid,mid,score) values('F001','M004',79)
    insert into score(fid,mid,score) values('F002','M004',77)
    insert into score(fid,mid,score) values('F003','M004',1)
    insert into score(fid,mid,score) values('F004','M004',22)
    
    
    -------------------------
    View Code
  • 相关阅读:
    软件设计师 -算法设计与分析
    windows下git使用
    SourceTree免注册并连码云
    软件设计师-软件工程基础知识
    基本约瑟夫环问题详解
    SGU180(树状数组,逆序对,离散)
    POJ(1195)(单点修改,区间查询)(二维)
    C++ bitset
    冯志远0920
    怎样学好哲学(lucas+费马小定理)
  • 原文地址:https://www.cnblogs.com/tcheng/p/6060778.html
Copyright © 2011-2022 走看看