首先，由上图创建表

1. mysql> create table worker(

2. -> dept_id int(11) not null,

3. -> emp_id int (11) not null,

4. -> work_time date not null,

5. -> salary float(8,2) not null,

6. -> poli_face varchar(10) not null default '群众',

7. -> name varchar(20) not null,

8. -> birth date not null,

9. -> primary key(emp_id)

10. -> )engine=innodb default charset=utf8 row_format=dynamic;

11. Query OK, 0 rows affected, 4 warnings (0.03 sec)

然后，向表内插入数据

1. mysql> insert into worker values(101,1001,'2015-5-4', 3500.00,'群众','张三','1990-7-1');

2. Query OK, 1 row affected (0.00 sec)

4. mysql> insert into worker values(101,1002,'2017-2-6', 3200.00,'团员','李四','1990-2-8');

5. Query OK, 1 row affected (0.01 sec)

7. mysql> insert into worker values(102,1003,'2011-2-4',8500.00,'党员','王亮','1983-6-8');

8. Query OK, 1 row affected (0.01 sec)

10. mysql> insert into worker values(102,1004,'2016-10-10',5500.00,'群众','赵六','1994-9-5');

11. Query OK, 1 row affected (0.00 sec)

13. mysql> insert into worker values(102,1005,'2014-4-1',4800.00,'党员','钱七','1992-12-30');

14. Query OK, 1 row affected (0.00 sec)

16. mysql> insert into worker values(102,1006,'2017-5-5',4500.00,'党员','孙八','1996-9-2');

17. Query OK, 1 row affected (0.00 sec)

 1，显示所有职工的基本信息

 2，查询所有职工所属部门的部门号，不显示重复的部门号

 3，求出所有职工的人数

 4，列入最高工和最低工资

 5，列入职工的平均工资和总工资

 6，创建一个只有职工号，姓名和参加工作的新表，名为工作日期表

1. mysql> create table workdate select emp_id,name from worker;

2. Query OK, 6 rows affected (0.02 sec)

3. Records: 6 Duplicates: 0 Warnings: 0

5. mysql> select *from workdate;

6. +--------+--------+

7. | emp_id | name |

8. +--------+--------+

9. | 1001 | 张三 |

10. | 1002 | 李四 |

11. | 1003 | 王亮 |

12. | 1004 | 赵六 |

13. | 1005 | 钱七 |

14. | 1006 | 孙八 |

15. +--------+--------+

16. 6 rows in set (0.00 sec)

7，显示所有女职工的年龄（要给表中增加性别和年龄，然后给每人插入年龄和性别）

1. mysql> alter table worker add age tinyint default 18;

2. Query OK, 0 rows affected (0.03 sec)

3. Records: 0 Duplicates: 0 Warnings: 0

5. mysql> alter table worker add gender char(1) check(gender in ('F','M'));

6. Query OK, 6 rows affected (0.04 sec)

7. Records: 6 Duplicates: 0 Warnings: 0

9. mysql> update worker set age=19,gender='F' where name='张三';

10. Query OK, 1 row affected (0.01 sec)

11. Rows matched: 1 Changed: 1 Warnings: 0

13. mysql> update worker set age=20,gender='F' where name='李四';

14. Query OK, 1 row affected (0.00 sec)

15. Rows matched: 1 Changed: 1 Warnings: 0

17. mysql> update worker set age=21,gender='M' where name='王亮';

18. Query OK, 1 row affected (0.00 sec)

19. Rows matched: 1 Changed: 1 Warnings: 0

21. mysql> update worker set gender='M' where name='赵六';

22. Query OK, 1 row affected (0.00 sec)

23. Rows matched: 1 Changed: 1 Warnings: 0

25. mysql> update worker set gender='M' where name='钱七';

26. Query OK, 1 row affected (0.01 sec)

27. Rows matched: 1 Changed: 1 Warnings: 0

29. mysql> update worker set gender='M' where name='孙八';

30. Query OK, 1 row affected (0.00 sec)

31. Rows matched: 1 Changed: 1 Warnings: 0

查看表内容

 最后差询女职工的年龄

 8,列出所有姓刘的职工的职工号，姓名和出生日期

9，列出1960年以前出生的职工的姓名，参加工作日期

Empty set (0.00 sec)  没有符合条件的职工，所以为空

10，列出工资在1000-2000之间的所有职工姓名

 11，列出所有姓陈和姓李的职工姓名

 12，列出所有部门号为2和3的职工号，姓名，党员

 13，将职工表worker中的职工按先后顺序排序

 14，显示工资最高的前3名职工的职工号和姓名

 15，求出个部门党员的人数

16，统计个部门的工资和平均工资

 

17，统计总人数大于4的部门号和总人数