53 lines
1.3 KiB
SQL
53 lines
1.3 KiB
SQL
|
|
|
|
CREATE TABLE users(
|
|
id SERIAL PRIMARY KEY,
|
|
username VARCHAR(50) NOT NULL UNIQUE,
|
|
password VARCHAR(100) NOT NULL,
|
|
email VARCHAR(100)
|
|
);
|
|
|
|
|
|
|
|
CREATE TABLE menu_items (
|
|
id SERIAL PRIMARY KEY,
|
|
name VARCHAR(100) NOT NULL,
|
|
description TEXT,
|
|
price NUMERIC(10, 2) NOT NULL CHECK (price > 0),
|
|
category VARCHAR(50)
|
|
);
|
|
|
|
|
|
CREATE TABLE orders (
|
|
id SERIAL PRIMARY KEY,
|
|
user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
|
|
created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
|
|
total_price NUMERIC(10, 2) NOT NULL CHECK (total_price >= 0)
|
|
);
|
|
|
|
|
|
|
|
CREATE TABLE order_details (
|
|
id SERIAL PRIMARY KEY,
|
|
order_id INTEGER NOT NULL REFERENCES orders(id) ON DELETE CASCADE,
|
|
menu_item_id INTEGER NOT NULL REFERENCES menu_items(id),
|
|
quantity INTEGER NOT NULL CHECK (quantity > 0),
|
|
price NUMERIC(10, 2) NOT NULL CHECK (price > 0)
|
|
);
|
|
|
|
|
|
INSERT INTO menu_items (name, description, price, category)
|
|
VALUES
|
|
('Pizza', 'Cheese pizza with tomato sauce', 12.50, 'Pizza'),
|
|
('Burger', 'Beef burger with fries', 9.00, 'Burger'),
|
|
('Pasta', 'Pasta with Alfredo sauce', 11.00, 'Pasta'),
|
|
('Cola', 'Cold soft drink', 2.50, 'Drink');
|
|
|
|
SELECT * FROM users;
|
|
SELECT * FROM menu_items;
|
|
SELECT * FROM orders;
|
|
SELECT * FROM order_details;
|
|
|
|
|
|
|