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topic:

数据准备
   创建两张表:部门(dept)和员工(emp)，并插入数据，代码如下
   create table dept(
       dept_id int primary key auto_increment comment '部门编号',
       dept_name char(20)comment'部门名称'
);
insert into dept (dept_name) values('销售部'),('财务部'),('生产部'),('人事部');
create table emp(
    emp_id int primary key auto_increment comment'员工号',
    emp_name char(20)not null default '' comment '员工姓名',
    gender char(2)not null default '男' comment'性别',
    birth datetime not null default '1990-1-1' comment'出生日期',
    salary decimal(10,2)not null default 0 comment'工资',
    address varchar(200)not null default '' comment'通讯地址',
    dept_id int comment'部门编号'
);
create index idx_name on emp(emp_name);
create index idx_birth on emp (birth);
create index idx_deptid_name on emp(dept id,emp_name);

insert into emp(emp_name,gender ,birth ,salary, address,dept_id)
values('张晓红', '女', '1980-01-23', 5800, '河南省郑州市中原路10号', 1),
 ('张静静', '女', '1987-10-03', 5400, '河南省新乡市平原路38号', 1),
 ('王云飞', '男', '1992-11-15', 5600, '河南省新乡市人民路28号', 1),
 ('王鹏飞', '男', '1987-10-01', 6800, '河南省新乡市东明大道12号', 1),
 ('王大鹏', '男', '1989-02-11', 5900, '河南省郑州市东风路15号', 1),
 ('王萌萌', '女', '1986-12-30', 5000, '河南省开封市五一路14号', 2),
 ('王大光', '男', '1988-11-08', 6200, '河南省开封市八一路124号', 2),
 ('王小明', '男', '1998-01-03', 4800, '河南省驻马店市雪松路128号', 2),
 ('王娜娜', '女', '1994-03-05', 5200, '河南省驻马店市车站路2号', 2),
 ('刘云飞', '男', '1992-08-13', 6800, '河南省南阳市民生路255号', 3),
 ('张陆军', '男', '1991-09-06', 6200, '河南省南阳市张仲景路14号', 3);

1、创建视图v_emp_dept_id_1，查询销售部门的员工姓名和家庭住址,
2、创建视图v_emp_dept，查询销售部门员工姓名和家庭住址及部门名称。
3、创建视图v_dept_emp_count(dept_name,emp count,avg salay)，统计每个部门人数并计算平均工资
4、修改视图v_emp_dept，查询销售部门员工姓名、家庭住址、工资和部门名称。
5、查看视图名称;
查看视图结构;
查看创建视图语句;
6、删除以上三个视图。

存储过程作业:
1、创建一个提取emp表所有员工工资和的存储过程s1
2、调用存储过程s1
3、创建存储过程s2，实现输入员工姓名后返回员工的家庭住址，
4、调用存储过程s2
5、创建一个存储过程avg sai，有3个参数，分别是dept，gender，接收平均工资，功能査询emp表dep
6、调用存储过程avg sai
7、删除以上存储过程

SQL operation command:

1. Create a view v_emp_dept_id_1 to query the names and home addresses of employees in the sales department.

2. Create the view v_emp_dept to query the names, home addresses, and department names of the sales department employees.

3. Create a view v_dept_emp_count(dept_name,emp count,avg salay) to count the number of people in each department and calculate the average salary

4. Modify the view v_emp_dept to query the name, home address, salary and department name of the sales department employees.

5. Check the view name;

Check out the view structure;

Check the statement to create a view; (this part will have format errors when using the command line, so use visualization software to output)

6. Delete the above three views.

Stored procedure job:

1. Create a stored procedure s1 to extract the salary and total of all employees in the emp table

 

2. Call stored procedure s1

 

3. Create a stored procedure s2 to return the employee's home address after entering the employee's name.

 

4. Call stored procedure s2

 

5. Create a stored procedure avg sai with three parameters, dept and gender, to receive the average salary and query the emp table dep

 

6. Call the stored procedure avg_sai

 

7. Delete the above stored procedures