From ccaf839b9a07cc69cdf89712797bc158f9dd7c3f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=D0=86=D0=BB=D0=BB=D1=8F=20=D0=92=D0=B8=D1=82=D0=BE=D0=B2?= =?UTF-8?q?=D1=82=D0=BE=D0=B2?= Date: Sat, 18 Oct 2025 18:59:00 +0300 Subject: [PATCH 1/5] ready for task --- task.sql | 74 ++++++++++++++++++++++++++++++++++++++------------------ 1 file changed, 50 insertions(+), 24 deletions(-) diff --git a/task.sql b/task.sql index cc65344..11af97e 100644 --- a/task.sql +++ b/task.sql @@ -1,33 +1,59 @@ --- Create database and tables - +-- Видалити базу, якщо існує +DROP DATABASE IF EXISTS ShopDB; CREATE DATABASE ShopDB; USE ShopDB; +-- Таблиця країн CREATE TABLE Countries ( - ID INT, - Name VARCHAR(50), - PRIMARY KEY (ID) + ID INT AUTO_INCREMENT PRIMARY KEY, + Name VARCHAR(50) NOT NULL +); + +-- Таблиця складів +CREATE TABLE Warehouses ( + ID INT AUTO_INCREMENT PRIMARY KEY, + WarehouseName VARCHAR(50) NOT NULL, + WarehouseAddress VARCHAR(100), + CountryID INT NOT NULL, + FOREIGN KEY (CountryID) REFERENCES Countries(ID) +); + +-- Таблиця товарів +CREATE TABLE Products ( + ID INT AUTO_INCREMENT PRIMARY KEY, + ProductName VARCHAR(50) NOT NULL ); +-- Таблиця запасів товарів на складах (зв'язує Products і Warehouses) CREATE TABLE ProductInventory ( - ID INT, - ProductName VARCHAR(50), - WarehouseAmount INT, - WarehouseName VARCHAR(50), - WarehouseAddress VARCHAR(50), - CountryID INT, - FOREIGN KEY (CountryID) REFERENCES Countries(ID) ON DELETE NO ACTION, - PRIMARY KEY (ID) + ID INT AUTO_INCREMENT PRIMARY KEY, + ProductID INT NOT NULL, + WarehouseID INT NOT NULL, + WarehouseAmount INT NOT NULL, + FOREIGN KEY (ProductID) REFERENCES Products(ID), + FOREIGN KEY (WarehouseID) REFERENCES Warehouses(ID) ); --- Populate test data - -INSERT INTO Countries (ID,Name) - VALUES (1, 'Country1'); -INSERT INTO Countries (ID,Name) - VALUES (2, 'Country2'); - -INSERT INTO ProductInventory (ID,ProductName,WarehouseAmount,WarehouseName,WarehouseAddress,CountryID) - VALUES (1, 'AwersomeProduct', 2, 'Warehouse-1', 'City-1, Street-1',1); -INSERT INTO ProductInventory (ID,ProductName,WarehouseAmount,WarehouseName,WarehouseAddress,CountryID) - VALUES (2, 'AwersomeProduct', 5, 'Warehouse-2', 'City-2, Street-2',2); +-- ======================================= +-- Вставлення тестових даних +-- ======================================= + +-- Країни +INSERT INTO Countries (Name) +VALUES ('Country1'), ('Country2'); + +-- Склади +INSERT INTO Warehouses (WarehouseName, WarehouseAddress, CountryID) +VALUES +('Warehouse-1', 'City-1, Street-1', 1), +('Warehouse-2', 'City-2, Street-2', 2); + +-- Товари +INSERT INTO Products (ProductName) +VALUES ('AwersomeProduct'); + +-- Залишки товарів на складах +INSERT INTO ProductInventory (ProductID, WarehouseID, WarehouseAmount) +VALUES +(1, 1, 2), +(1, 2, 5); From 9ef1ed26b1799d58296153fe1d1f23aa0ddaf28e Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=D0=86=D0=BB=D0=BB=D1=8F=20=D0=92=D0=B8=D1=82=D0=BE=D0=B2?= =?UTF-8?q?=D1=82=D0=BE=D0=B2?= Date: Sat, 18 Oct 2025 19:06:18 +0300 Subject: [PATCH 2/5] fix a problem --- task.sql | 43 +++++++++++++++++++++++++++++-------------- 1 file changed, 29 insertions(+), 14 deletions(-) diff --git a/task.sql b/task.sql index 11af97e..b7d0bb2 100644 --- a/task.sql +++ b/task.sql @@ -1,41 +1,56 @@ --- Видалити базу, якщо існує +-- Видалення старої бази та створення нової DROP DATABASE IF EXISTS ShopDB; CREATE DATABASE ShopDB; USE ShopDB; --- Таблиця країн +-- ======================================= +-- 1. Таблиця країн +-- ======================================= CREATE TABLE Countries ( ID INT AUTO_INCREMENT PRIMARY KEY, Name VARCHAR(50) NOT NULL -); +) ENGINE=InnoDB; --- Таблиця складів +-- ======================================= +-- 2. Таблиця складів +-- ======================================= CREATE TABLE Warehouses ( ID INT AUTO_INCREMENT PRIMARY KEY, WarehouseName VARCHAR(50) NOT NULL, WarehouseAddress VARCHAR(100), CountryID INT NOT NULL, FOREIGN KEY (CountryID) REFERENCES Countries(ID) -); + ON DELETE RESTRICT + ON UPDATE CASCADE +) ENGINE=InnoDB; --- Таблиця товарів +-- ======================================= +-- 3. Таблиця товарів +-- ======================================= CREATE TABLE Products ( ID INT AUTO_INCREMENT PRIMARY KEY, ProductName VARCHAR(50) NOT NULL -); +) ENGINE=InnoDB; --- Таблиця запасів товарів на складах (зв'язує Products і Warehouses) +-- ======================================= +-- 4. Таблиця запасів товарів на складах +-- ======================================= CREATE TABLE ProductInventory ( ID INT AUTO_INCREMENT PRIMARY KEY, ProductID INT NOT NULL, WarehouseID INT NOT NULL, - WarehouseAmount INT NOT NULL, - FOREIGN KEY (ProductID) REFERENCES Products(ID), + WarehouseAmount INT UNSIGNED NOT NULL CHECK (WarehouseAmount >= 0), + FOREIGN KEY (ProductID) REFERENCES Products(ID) + ON DELETE CASCADE + ON UPDATE CASCADE, FOREIGN KEY (WarehouseID) REFERENCES Warehouses(ID) -); + ON DELETE CASCADE + ON UPDATE CASCADE, + UNIQUE (ProductID, WarehouseID) -- 🔒 гарантує унікальність пари товар+склад +) ENGINE=InnoDB; -- ======================================= --- Вставлення тестових даних +-- 5. Тестові дані -- ======================================= -- Країни @@ -50,9 +65,9 @@ VALUES -- Товари INSERT INTO Products (ProductName) -VALUES ('AwersomeProduct'); +VALUES ('AwesomeProduct'); --- Залишки товарів на складах +-- Запаси товарів на складах INSERT INTO ProductInventory (ProductID, WarehouseID, WarehouseAmount) VALUES (1, 1, 2), From 3158c978c4f76fffc268e88d721ffd9c71a08053 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=D0=86=D0=BB=D0=BB=D1=8F=20=D0=92=D0=B8=D1=82=D0=BE=D0=B2?= =?UTF-8?q?=D1=82=D0=BE=D0=B2?= Date: Sat, 18 Oct 2025 19:11:13 +0300 Subject: [PATCH 3/5] fix a problem2 --- task.sql | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/task.sql b/task.sql index b7d0bb2..e80623c 100644 --- a/task.sql +++ b/task.sql @@ -1,5 +1,5 @@ --- Видалення старої бази та створення нової -DROP DATABASE IF EXISTS ShopDB; +-- Видалення старої бази (точно за завданням) +DROP DATABASE ShopDB; CREATE DATABASE ShopDB; USE ShopDB; @@ -46,7 +46,7 @@ CREATE TABLE ProductInventory ( FOREIGN KEY (WarehouseID) REFERENCES Warehouses(ID) ON DELETE CASCADE ON UPDATE CASCADE, - UNIQUE (ProductID, WarehouseID) -- 🔒 гарантує унікальність пари товар+склад + UNIQUE (ProductID, WarehouseID) ) ENGINE=InnoDB; -- ======================================= From af7445cb6e7f39528a627a04f8667d57f755ca28 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=D0=86=D0=BB=D0=BB=D1=8F=20=D0=92=D0=B8=D1=82=D0=BE=D0=B2?= =?UTF-8?q?=D1=82=D0=BE=D0=B2?= Date: Sat, 18 Oct 2025 19:14:22 +0300 Subject: [PATCH 4/5] fix a problem3 --- task.sql | 21 --------------------- 1 file changed, 21 deletions(-) diff --git a/task.sql b/task.sql index e80623c..5ee1eff 100644 --- a/task.sql +++ b/task.sql @@ -1,19 +1,12 @@ --- Видалення старої бази (точно за завданням) DROP DATABASE ShopDB; CREATE DATABASE ShopDB; USE ShopDB; --- ======================================= --- 1. Таблиця країн --- ======================================= CREATE TABLE Countries ( ID INT AUTO_INCREMENT PRIMARY KEY, Name VARCHAR(50) NOT NULL ) ENGINE=InnoDB; --- ======================================= --- 2. Таблиця складів --- ======================================= CREATE TABLE Warehouses ( ID INT AUTO_INCREMENT PRIMARY KEY, WarehouseName VARCHAR(50) NOT NULL, @@ -24,17 +17,11 @@ CREATE TABLE Warehouses ( ON UPDATE CASCADE ) ENGINE=InnoDB; --- ======================================= --- 3. Таблиця товарів --- ======================================= CREATE TABLE Products ( ID INT AUTO_INCREMENT PRIMARY KEY, ProductName VARCHAR(50) NOT NULL ) ENGINE=InnoDB; --- ======================================= --- 4. Таблиця запасів товарів на складах --- ======================================= CREATE TABLE ProductInventory ( ID INT AUTO_INCREMENT PRIMARY KEY, ProductID INT NOT NULL, @@ -49,25 +36,17 @@ CREATE TABLE ProductInventory ( UNIQUE (ProductID, WarehouseID) ) ENGINE=InnoDB; --- ======================================= --- 5. Тестові дані --- ======================================= - --- Країни INSERT INTO Countries (Name) VALUES ('Country1'), ('Country2'); --- Склади INSERT INTO Warehouses (WarehouseName, WarehouseAddress, CountryID) VALUES ('Warehouse-1', 'City-1, Street-1', 1), ('Warehouse-2', 'City-2, Street-2', 2); --- Товари INSERT INTO Products (ProductName) VALUES ('AwesomeProduct'); --- Запаси товарів на складах INSERT INTO ProductInventory (ProductID, WarehouseID, WarehouseAmount) VALUES (1, 1, 2), From 3d7d418c7f91201c6579638822e040784b2d5bed Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=D0=86=D0=BB=D0=BB=D1=8F=20=D0=92=D0=B8=D1=82=D0=BE=D0=B2?= =?UTF-8?q?=D1=82=D0=BE=D0=B2?= Date: Sat, 18 Oct 2025 19:31:56 +0300 Subject: [PATCH 5/5] fix a problem4 --- task.sql | 1 - 1 file changed, 1 deletion(-) diff --git a/task.sql b/task.sql index 5ee1eff..e07c21a 100644 --- a/task.sql +++ b/task.sql @@ -1,4 +1,3 @@ -DROP DATABASE ShopDB; CREATE DATABASE ShopDB; USE ShopDB;