今日SQL题：模拟库存管理系统中产品缺货预警
难度系数：☆☆☆☆☆☆☆☆☆
1、题目要求(总共五题，每日一题)
- 找出每个仓库中库存低于再订货水平的产品，并按缺货数量排序。
- 显示仓库名称、产品名称、库存数量、再订货水平、缺货数量。
2、表和虚拟数据(全部执行，后面题目会用到
--仓库信息表
CREATE TABLE IM_Warehouses (
WarehouseID INT PRIMARY KEY, -- 仓库ID
WarehouseName NVARCHAR(100), -- 仓库名称
Location NVARCHAR(100) -- 仓库位置
);
--产品表
CREATE TABLE IM_Products (
ProductID INT PRIMARY KEY, -- 产品ID
ProductName NVARCHAR(100), -- 产品名称
Category NVARCHAR(50), -- 产品类别
UnitCost DECIMAL(10, 2), -- 产品单价
ReorderLevel INT -- 再订货水平
);
--产品库存表
CREATE TABLE IM_Inventory (
InventoryID INT PRIMARY KEY, -- 库存ID
WarehouseID INT, -- 仓库ID
ProductID INT, -- 产品ID
Quantity INT, -- 库存数量
LastUpdated DATETIME, -- 最后更新时间
FOREIGN KEY (WarehouseID) REFERENCES IM_Warehouses(WarehouseID),
FOREIGN KEY (ProductID) REFERENCES IM_Products(ProductID)
);
--订单表
CREATE TABLE IM_Orders (
OrderID INT PRIMARY KEY, -- 订单ID
OrderDate DATETIME, -- 订单日期
CustomerID INT, -- 客户ID，引用IM_Customers表
WarehouseID INT, -- 仓库ID，引用IM_Warehouses表
FOREIGN KEY (WarehouseID) REFERENCES IM_Warehouses(WarehouseID)
);
--订单明细表
CREATE TABLE IM_OrderDetails (
OrderDetailID INT PRIMARY KEY, -- 订单详情ID
OrderID INT, -- 订单ID，引用IM_Orders表
ProductID INT, -- 产品ID，引用IM_Products表
Quantity INT, -- 订单数量
UnitPrice DECIMAL(10, 2), -- 产品单价
FOREIGN KEY (OrderID) REFERENCES IM_Orders(OrderID),
FOREIGN KEY (ProductID) REFERENCES IM_Products(ProductID)
);
--客户表
CREATE TABLE IM_Customers (
CustomerID INT PRIMARY KEY, -- 客户ID
CustomerName NVARCHAR(100), -- 客户名称
CustomerEmail NVARCHAR(100) -- 客户邮箱
);
--模拟数据
INSERT INTO IM_Warehouses (WarehouseID, WarehouseName, Location) VALUES
(1, '京东智能仓储-北京库', '北京'),
(2, '阿里智能仓储-杭州库', '杭州'),
(3, '华为智能仓储-深圳库', '深圳'),
(4, '中兴智能仓储-成都库', '成都'),
(5, '顺丰智能仓储-广州库', '广州');
INSERT INTO IM_Products (ProductID, ProductName, Category, UnitCost, ReorderLevel) VALUES
(1, '笔记本电脑', '电子产品', 1200.00, 50),
(2, '智能手机', '电子产品', 800.00, 100),
(3, '办公椅', '家具', 250.00, 30),
(4, '耳机', '配件', 150.00, 70),
(5, '显示器', '电子产品', 300.00, 20),
(6, '键盘', '配件', 80.00, 40),
(7, '鼠标', '配件', 40.00, 50),
(8, '打印机', '电子产品', 150.00, 10),
(9, '台灯', '家具', 90.00, 25),
(10, 'USB闪存', '配件', 20.00, 150);
INSERT INTO IM_Customers (CustomerID, CustomerName, CustomerEmail) VALUES
(1, '客户A', '[email protected]'),
(2, '客户B', '[email protected]'),
(3, '客户C', '[email protected]'),
(4, '客户D', '[email protected]'),
(5, '客户E', '[email protected]'),
(6, '客户F', '[email protected]'),
(7, '客户G', '[email protected]'),
(8, '客户H', '[email protected]'),
(9, '客户I', '[email protected]'),
(10, '客户J', '[email protected]');
INSERT INTO IM_Inventory (InventoryID, WarehouseID, ProductID, Quantity, LastUpdated) VALUES
(1, 1, 1, 60, '2024-08-01'),
(2, 1, 2, 120, '2024-08-01'),
(3, 1, 6, 200, '2024-08-01'),
(4, 1, 9, 30, '2024-08-01'),
(5, 2, 1, 80, '2024-08-01'),
(6, 2, 3, 20, '2024-08-01'),
(7, 2, 7, 90, '2024-08-01'),
(8, 2, 10, 150, '2024-08-01'),
(9, 3, 4, 50, '2024-08-01'),
(10, 3, 5, 10, '2024-08-01'),
(11, 3, 8, 5, '2024-08-01'),
(12, 4, 2, 60, '2024-08-01'),
(13, 4, 5, 40, '2024-08-01'),
(14, 4, 6, 120, '2024-08-01'),
(15, 5, 3, 80, '2024-08-01'),
(16, 5, 7, 30, '2024-08-01'),
(17, 5, 8, 20, '2024-08-01');
INSERT INTO IM_Orders (OrderID, OrderDate, CustomerID, WarehouseID) VALUES
(1, '2024-08-02', 1, 1),
(2, '2024-08-05', 2, 2),
(3, '2024-08-07', 3, 3),
(4, '2024-08-10', 4, 1),
(5, '2024-08-12', 5, 2),
(6, '2024-08-14', 6, 3),
(7, '2024-08-16', 7, 4),
(8, '2024-08-18', 8, 5),
(9, '2024-08-20', 9, 1),
(10, '2024-08-22', 10, 2);
INSERT INTO IM_OrderDetails (OrderDetailID, OrderID, ProductID, Quantity, UnitPrice) VALUES
(1, 1, 1, 10, 1200.00),
(2, 1, 2, 20, 800.00),
(3, 2, 3, 15, 250.00),
(4, 2, 4, 5, 150.00),
(5, 3, 5, 2, 300.00),
(6, 3, 6, 8, 80.00),
(7, 4, 7, 5, 40.00),
(8, 4, 8, 1, 150.00),
(9, 5, 9, 3, 90.00),
(10, 5, 10, 10, 20.00),
(11, 6, 1, 2, 1200.00),
(12, 6, 3, 5, 250.00),
(13, 7, 4, 10, 150.00),
(14, 7, 6, 3, 80.00),
(15, 8, 5, 7, 300.00),
(16, 8, 9, 4, 90.00),
(17, 9, 2, 6, 800.00),
(18, 9, 10, 8, 20.00),
(19, 10, 7, 5, 40.00),
(20, 10, 8, 2, 150.00);
3、预期查询结果
