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-- Товары
CREATE TABLE products (
product_id INT PRIMARY KEY AUTO_INCREMENT ,
product_name VARCHAR ( 255 ) NOT NULL ,
description TEXT ,
price DECIMAL ( 10 , 2 ) NOT NULL ,
stock_quantity INT NOT NULL
) ;
-- Клиенты
CREATE TABLE customers (
customer_id INT PRIMARY KEY AUTO_INCREMENT ,
first_name VARCHAR ( 255 ) NOT NULL ,
last_name VARCHAR ( 255 ) NOT NULL ,
email VARCHAR ( 255 ) NOT NULL
) ;
-- Заказы
CREATE TABLE orders (
order_id INT PRIMARY KEY AUTO_INCREMENT ,
customer_id INT ,
order_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP ,
total_amount DECIMAL ( 10 , 2 ) NOT NULL ,
status VARCHAR ( 50 ) DEFAULT ' В ' ,
FOREIGN KEY ( customer_id ) REFERENCES customers ( customer_id )
) ;
-- Товары в заказах
CREATE TABLE order_items (
order_item_id INT PRIMARY KEY AUTO_INCREMENT ,
order_id INT ,
product_id INT ,
quantity INT NOT NULL ,
subtotal DECIMAL ( 10 , 2 ) NOT NULL ,
FOREIGN KEY ( order_id ) REFERENCES orders ( order_id ) ,
FOREIGN KEY ( product_id ) REFERENCES products ( product_id )
) ;
