1. MySQL练习题

现在有一教学管理系统，具体的关系模式如下：

Student (no, name, sex, birthday, class)

Teacher (no, name, sex, birthday, prof, depart)

Course (cno, cname, tno)

Score (no, cno, degree)

其中表中包含如下数据：

Course表：

 

Score表：

Student表：

 

Teacher表：

根据上面描述完成下面问题：

DDL

1. 写出上述表的建表语句。

Course表：

Sourse表:

Student表:

 Teacher表:

命令：

DML

1. 给出相应的INSERT语句来完成题中给出数据的插入。

命令：

Course:

insert into course(cno,cname,tno) values(’3-101’,’数据库’，1);

insert into course(cno,cname,tno) values(’5-102,’数学'，3);

insert into course(cno,cname,tno) values(’3-103’,’信息系统’，4);

insert into course(cno,cname,tno) values(’3-104’,’操作系统’，6);

insert into course(cno,cname,tno) values(’3-105’,’数据结构’，4);

insert into course(cno,cname,tno) values(’3-106’,’数据处理’，5);

insert into course(cno,cname,tno) values(’4-107’,’pascal语言’，5);

insert into course(cno,cname,tno) values(’4-108’,’c++’，7）;

insert into course(cno,cname,tno) values(’4-109’,’java’，8);

insert into course(cno,cname,tno) values(’3-245’,’数据挖掘’，10);

insert into course(cno,cname,tno) values(’3-111’,’软件工程’，11);

Score:

Insert into score(no,cno,degree) values(5001，’3-105’，69);

Insert into score(no,cno,degree) values(5001，’5-102’，55);

Insert into score(no,cno,degree) values(503，’4-108’，85);

Insert into score(no,cno,degree) values(5004，’3-105’，77);

Insert into score(no,cno,degree) values(5005，’3-245’，100);

Insert into score(no,cno,degree) values(5006，’3-105’，53);

Insert into score(no,cno,degree) values(5003，’4-109’，45);

Insert into score(no,cno,degree) values(5008，’3-105’，98);

Insert into score(no,cno,degree) values(5004，’4-109’，68);

Insert into score(no,cno,degree) values(5010，’3-105’，88);

Insert into score(no,cno,degree) values(5003，’3-105’，98);

Insert into score(no,cno,degree) values(5005，’4-109’，68);

Insert into score(no,cno,degree) values(5002，’3-105’，88);

Insert into score(no,cno,degree) values(107，’3-105’，98);

Insert into score(no,cno,degree) values(108, ’4-109’，68);

Insert into score(no,cno,degree) values(109，’3-105’，88);

Insert into score(no,cno,degree) values(109，’4-109’，80);

Insert into score(no,cno,degree) values(107，’3-111’，88);

Insert into score(no,cno,degree) values(5003，’3-111’，80);

Student:

Insert into student(no,name,sex,birthday,class) values(5001，’李勇’,’男’，’1987-7-22 00:00:00’，95001);

Insert into student(no,name,sex,birthday,class) values(5002，’刘晨’,’女’，’1987-11-15 00:00:00’，95002);

Insert into student(no,name,sex,birthday,class) values(5003，’王敏’,’女’，’1987-10-05 00:00:00’，95001);

Insert into student(no,name,sex,birthday,class) values(5004，’李好尚’,’男’，’1987-9-25 00:00:00’，95003);

Insert into student(no,name,sex,birthday,class) values(5005，’李军’,’男’，’1987-7-17 00:00:00’，95004);

Insert into student(no,name,sex,birthday,class) values(5006，’范新位’,’女’，’1987-6-18 00:00:00’，95005);

Insert into student(no,name,sex,birthday,class) values(5007，’张霞东’,’女’，’1987-8-29 00:00:00’，95006);

Insert into student(no,name,sex,birthday,class) values(5008，’赵薇’,’男’，’1987-6-15 00:00:00’，95007);

Insert into student(no,name,sex,birthday,class) values(5009，’钱民将’,’女’，’1987-6-23 00:00:00’，95008);

Insert into student(no,name,sex,birthday,class) values(5010，’孙俪’,’女’，’1987-6-24 00:00:00’，95002);

Insert into student(no,name,sex,birthday,class) values(108，’赵里’,’男’，’1987-6-15 00:00:00’，95007);

Insert into student(no,name,sex,birthday,class) values(109，’丘处机’,’男’，’1987-6-23 00:00:00’，95008);

Insert into student(no,name,sex,birthday,class) values(107，’杨康’,’男’，’1987-6-24 00:00:00’，95001);

Teacher:

Insert into teacher(no,name,sex,birthday,prof,dapart) values(1,’李卫’，’男 ’,’1957-11-5 00:00:00’,’教授’,’电子工程系’);

Insert into teacher(no,name,sex,birthday,prof,dapart) values(1,’刘备’，’男 ’,’1967-10-9 00:00:00’,’副教授’,’math’);

Insert into teacher(no,name,sex,birthday,prof,dapart) values(1,’关羽’，’男 ’,’1977-9-20 00:00:00’,’讲师’,’sc’);

Insert into teacher(no,name,sex,birthday,prof,dapart) values(1,’李修’，’男 ’,’1957-6-25 00:00:00’,’教授’,’elec’);

Insert into teacher(no,name,sex,birthday,prof,dapart) values(1,’诸葛亮’，’男 ’,’1977-6-15 00:00:00’,’教授’,’计算机系’);

Insert into teacher(no,name,sex,birthday,prof,dapart) values(1,’殷素素’，’女 ’,’1967-1-15 00:00:00’,’副教授’,’sc’);

Insert into teacher(no,name,sex,birthday,prof,dapart) values(1,’周芷若’，’女 ’,’1947-2-23 00:00:00’,’教授’,’sc’);

Insert into teacher(no,name,sex,birthday,prof,dapart) values(1,’赵云’，’男 ’,’1980-6-13 00:00:00’,’副教授’,’计算机系’);

Insert into teacher(no,name,sex,birthday,prof,dapart) values(1,’张敏’，’女 ’,’1985-5-05 00:00:00’,’助教’,’sc’);

Insert into teacher(no,name,sex,birthday,prof,dapart) values(1,’黄蓉’，’女 ’,’1967-3-22 00:00:00’,’副教授’,’sc’);

Insert into teacher(no,name,sex,birthday,prof,dapart) values(1,’张三’，’男 ’,’1967-3-22 00:00:00’,’副教授’,’sc’);
 

单表查询

1. 以class降序输出student的所有记录（student表全部属性）

命令：select * from student ORDER BY class DESC;

 

 

1. 列出教师所在的单位depart（不重复）。

命令： select DISTINCT depart from teacher;

 

1. 列出student表中所有记录的name、sex和class列

命令： select name,sex,class from student;

1. 输出student中不姓王的同学的姓名。

命令：select * from student WHERE name not like '王%';

 

1. 输出成绩为85或86或88或在60-80之间的记录（no,cno,degree）

命令： select * from score where degree=85 or degree=86 or degree=88 or degree BETWEEN 60 and 80;

 

1. 输出班级为95001或性别为‘女’ 的同学（student表全部属性）

命令：select * from student where class=95001 OR sex='女';

 

1. 以cno升序、degree降序输出score的所有记录。（score表全部属性）

命令： select * from score order by cno,degree DESC;

 

1. 输出男生人数及这些男生分布在多少个班级中     

命令： select COUNT(*),count(DISTINCT class) FROM student where sex='男';

1. 列出存在有85分以上成绩的课程编号。

命令： select distinct cno from score where degree>85;

 

1. 输出95001班级的学生人数

命令： select COUNT(*) from student where class=95001;

1. 输出‘3-105’号课程的平均分

命令： select AVG(degree) from score where cno="3-105";

1. 输出student中最大和最小的birthday日期值

命令： select MIN(birthday),MAX(birthday) FROM student;

1. 显示95001和95004班全体学生的全部个人信息（不包括选课）。（student表全部属性）

命令： select * from student where class=95001 OR class=95004;

 

JDBC封装