第2次作业-SQL语句的基本使用

这个作业属于哪个课程	https://edu.cnblogs.com/campus/uzz/cs3
这个作业要求在哪里	https://www.cnblogs.com/wanghongjie668/p/17697063.html
这个作业的目标	第2次作业-SQL语句的基本使用

mysql> create database studentsdb;
Query OK, 1 row affected (0.01 sec)

mysql> use studentsdb;
Database changed
mysql> create table student_info(
    -> 学号 char(4) not null primary key,
    -> 姓名 char(8) not null,
    -> 性别 char(2) null,
    -> 出生日期 date null,
    -> 家族住址 varchar(50) null);
Query OK, 0 rows affected (0.01 sec)

mysql> desc student_info;

mysql> create table curriculum(
    -> 课程编号 char(4) not null primary key,
    -> 课程名称 varchar(50) null,
    -> 学分 int null);
Query OK, 0 rows affected (0.01 sec)

mysql> desc curricelum;

mysql> create table grade(
    -> 学号 char(4) not null,
    -> 课程编号 char(4) not null,
    -> 分数 int null,
    -> primary key(学号,课程编号)
    -> );
Query OK, 0 rows affected (0.01 sec)

mysql> desc grade;

mysql> insert into student_info
    -> (学号,姓名,性别,出生日期,家族住址)
    -> values
    -> ('0001','张青平','男','2000-10-01','衡阳市东风路77号');
Query OK, 1 row affected (0.00 sec)

mysql> select * from student_info
    -> ;

mysql> insert into student_info
    -> (学号,姓名,性别,出生日期,家族住址)
    -> values
    -> ('0002','刘东阳','男','1998-12-09','东阳市八一北路33号'),
    -> ('0003','马晓夏','女','1995-05-12','长岭市五一路763号');
Query OK, 2 rows affected (0.00 sec)
Records: 2  Duplicates: 0  Warnings: 0

mysql> select * from student_info
    -> ;

mysql> insert into student_info
    -> values
    -> ('0004','钱忠理','男','1994-09-23','滨海市洞庭大道279号'),
    -> ('0005','孙海洋','男','1995-04-03','长岛市解放路27号'),
    -> ('0006','郭小斌','男','1997-11-10','南山市红旗路113号'),
    -> ('0007','肖月玲','女','1996-12-07','东方市南京路11号'),
    -> ('0008','张玲珑','女','1997-12-24','滨江市新建路97号');
Query OK, 5 rows affected (0.01 sec)
Records: 5  Duplicates: 0  Warnings: 0

mysql> select * from student_info;

mysql> insert into curriculum
    -> (课程编号,课程名称,学分)
    -> values
    -> ('0001','计算机应用基础','2'),
    -> ('0002','C语言程序设计','2'),
    -> ('0003','数据库原理及应用','2'),
    -> ('0004','英语','4'),
    -> ('0005','数学','4');
Query OK, 5 rows affected (0.01 sec)
Records: 5  Duplicates: 0  Warnings: 0

mysql> select * from curriculum;

mysql> insert into grade
    -> (学号,课程编号,分数)
    -> values
    -> ('0001','0001','80'),
    -> ('0001','0002','91'),
    -> ('0001','0003','88'),
    -> ('0001','0004','85'),
    -> ('0001','0005','77'),
    -> ('0002','0001','73'),
    -> ('0002','0002','68'),
    -> ('0002','0003','80'),
    -> ('0002','0004','79'),
    -> ('0002','0005','73'),
    -> ('0003','0001','84'),
    -> ('0003','0002','92'),
    -> ('0003','0003','81'),
    -> ('0003','0004','82'),
    -> ('0003','0005','75');
Query OK, 15 rows affected (0.01 sec)
Records: 15  Duplicates: 0  Warnings: 0

mysql> select * from grade;