ADD file via upload

查询.sql

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+-- 查询所有客户信息
+SELECT * FROM customers;
+
+-- 查询电话号码中包含11的所有客户
+SELECT * FROM customers WHERE T_phone LIKE '%11%';
+-- 查询所有菜单项信息
+SELECT * FROM menu_items;
+
+-- 查询价格在10到20之间的所有菜单项
+SELECT * FROM menu_items WHERE M_price BETWEEN 10 AND 20;
+-- 查询所有折扣规则信息
+SELECT * FROM discount_rules;
+
+-- 查询折扣大于0.8的所有折扣规则
+SELECT * FROM discount_rules WHERE discount > 0.8;
+-- 查询所有餐桌信息
+SELECT * FROM tables;
+
+-- 查询状态为占用的所有餐桌
+SELECT * FROM tables WHERE Cz_zt = '占用';
+-- 查询所有员工信息
+SELECT * FROM workers;
+
+-- 查询工资大于5000的所有员工
+SELECT * FROM workers WHERE W_salary > 5000;
+-- 查询所有订单信息
+SELECT * FROM orders;
+
+-- 查询所有服务员为03的订单
+SELECT * FROM orders WHERE W_id = '03';
+-- 查询所有账单信息
+SELECT * FROM bills;
+
+-- 查询所有金额大于30的账单
+SELECT * FROM bills WHERE S_price > 30;