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@ -186,22 +186,97 @@ CALL update_employee_salary(1, 60000);
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创建一个存储过程 `delete_employee`,接受员工ID作为参数,删除该员工的记录。
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创建一个存储过程 `delete_employee`,接受员工ID作为参数,删除该员工的记录。
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```sql
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DELIMITER $$
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DROP PROCEDURE IF EXISTS delete_employee;
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CREATE PROCEDURE delete_employee(IN id INT)
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BEGIN
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DELETE FROM employee
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WHERE emp_id = id;
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END $$
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DELIMITER ;
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CALL delete_employee(1);
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```
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#### 练习题 4: 查询部门员工
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#### 练习题 4: 查询部门员工
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创建一个存储过程 `get_department_employees`,接受部门ID作为参数,返回该部门所有员工的详细信息。
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创建一个存储过程 `get_department_employees`,接受部门ID作为参数,返回该部门所有员工的详细信息。
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```sql
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DELIMITER $$
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DROP PROCEDURE IF EXISTS get_department_employees;
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CREATE PROCEDURE get_department_employees(IN id INT)
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BEGIN
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SELECT e.*
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FROM employee e
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WHERE e.dept_id = id;
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END $$
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DELIMITER ;
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CALL get_department_employees(1);
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```
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#### 练习题 5: 查询职位员工
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#### 练习题 5: 查询职位员工
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创建一个存储过程 `get_job_employees`,接受职位ID作为参数,返回该职位所有员工的详细信息。
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创建一个存储过程 `get_job_employees`,接受职位ID作为参数,返回该职位所有员工的详细信息。
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```sql
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DELIMITER $$
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DROP PROCEDURE IF EXISTS get_job_employees;
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CREATE PROCEDURE get_job_employees(IN id INT)
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BEGIN
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SELECT e.*
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FROM employee e
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WHERE e.job_id = id;
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END $$
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DELIMITER ;
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CALL get_job_employees(1);
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```
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#### 练习题 6: 计算部门平均工资
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#### 练习题 6: 计算部门平均工资
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创建一个存储过程 `calculate_avg_salary_by_dept`,接受部门ID作为参数,返回该部门的平均工资。
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创建一个存储过程 `calculate_avg_salary_by_dept`,接受部门ID作为参数,返回该部门的平均工资。
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```sql
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DELIMITER $$
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DROP PROCEDURE IF EXISTS calculate_avg_salary_by_dept;
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CREATE PROCEDURE calculate_avg_salary_by_dept(IN id INT)
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BEGIN
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SELECT AVG(e.salary)
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FROM employee e
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WHERE e.dept_id = id;
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END $$
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DELIMITER ;
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CALL calculate_avg_salary_by_dept(1);
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```
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#### 练习题 7: 计算职位平均工资
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#### 练习题 7: 计算职位平均工资
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创建一个存储过程 `calculate_avg_salary_by_job`,接受职位ID作为参数,返回该职位的平均工资。
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创建一个存储过程 `calculate_avg_salary_by_job`,接受职位ID作为参数,返回该职位的平均工资。
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```sql
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DELIMITER $$
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DROP PROCEDURE IF EXISTS calculate_avg_salary_by_job;
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CREATE PROCEDURE calculate_avg_salary_by_job(IN id INT)
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BEGIN
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SELECT AVG(e.salary)
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FROM employee e
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WHERE e.job_id = id;
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END $$
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DELIMITER ;
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CALL calculate_avg_salary_by_job(1);
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```
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#### 练习题 8: 查询高薪员工
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#### 练习题 8: 查询高薪员工
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创建一个存储过程 `get_high_salary_employees`,接受一个工资阈值作为参数,返回所有工资高于该阈值的员工。
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创建一个存储过程 `get_high_salary_employees`,接受一个工资阈值作为参数,返回所有工资高于该阈值的员工。
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