如何判断3个数的范围是否正确
时间: 2023-08-14 07:04:33 浏览: 52
JOIN Order ON Customer.customer_id = Order.customer_id
WHERE
Order.order_status = 'paid'
GROUP BY
Customer.customer_name;
```
13. 查询每个部门的名称、员工数量和员工的平均工作时间,只包括已完成的工时记录。
```sql
CREATE TABLE Employee (
employee_id INT PRIMARY KEY,
employee_name VARCHAR(50判断3个数的范围是否正确,需要先定义这3个数的合法范围,然后逐一进行判断),
department_id INT,
hourly_rate DECIMAL(10, 2)
);
CREATE TABLE Department (
department_id INT PRIMARY KEY。假设这3个数的合法范围分别为[a1, b1]、[a2, b2],
department_name VARCHAR(50)
);
CREATE TABLE Timesheet (
timesheet_id INT PRIMARY KEY,
employee_id INT,
、[a3, b3],则判断方法如下:
1. 判断第一个数是否在[a1, b1] start_time DATETIME,
end_time DATETIME,
timesheet_status VARCHAR(50)
);
CREATE TABLE Payroll (
payroll_id INT PRIMARY KEY,
employee_id INT,
pay_date DATE,
total_pay DECIMAL(10, 2)
);
SELECT
范围内,如果不在则说明范围不正确,直接返回错误。
2. 判断第二个数是否在[a Department.department_name,
COUNT(Employee.employee_id) AS employee_count,
AVG(Timesheet.end_time - Timesheet.start_time2, b2]范围内,如果不在则说明范围不正确,直接返回错误。
3. 判断第三) AS average_work_time
FROM
Department
JOIN Employee ON Department.department_id = Employee.department_id
JOIN Timesheet ON个数是否在[a3, b3]范围内,如果不在则说明范围不正确,直接返回错误。
Employee.employee_id = Timesheet.employee_id
WHERE
Timesheet.timesheet_status = 'completed'
GROUP BY
Department.department_name4. 如果三个数的范围都正确,则返回正确。
总之,只有三个数的范围都在合;
```
14. 查询每个产品类型的销售数量和总销售额,只包括已通过质检的订单法范围内,才能判断为范围正确。