数据筛选
ORDER BY 可升序可降序 默认升序
DESC 降序
运算符号
练习
记得先调用数据库 USE ClassicModels;
USE ClassicModels;
1. 根据amount给Payments表格排序, 降序
SELECT*FROM Payments
ORDER BY amount DESC;
2. 根据officeCode, employeeNumber给Employees排序, officeCode降序, employeeNumber升序
SELECT*FROM Employees
ORDER BY officeCode DESC, employeeNumber;
3. 查看Employees表格中officeCode 6的1619 employeeNumber的所有信息
SELECT*FROM Employees
WHERE officeCode=6 AND employeeNumber=1619;
4. 查看Order表格中orderNumber中10123到10425所有的信息
SELECT*FROM Orders
WHERE orderNumber Between 10123 And 10425;
