85 lines
3.5 KiB
SQL
85 lines
3.5 KiB
SQL
-- =======================================================
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-- USER TABLE
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-- =======================================================
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CREATE TABLE users (
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id SERIAL PRIMARY KEY,
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username VARCHAR(50) NOT NULL UNIQUE,
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password VARCHAR(255) NOT NULL,
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email VARCHAR(100)
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);
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-- =======================================================
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-- MENU ITEM TABLE
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-- =======================================================
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CREATE TABLE menu_items (
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id SERIAL PRIMARY KEY,
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name VARCHAR(100) NOT NULL,
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description TEXT,
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price NUMERIC(10,2) NOT NULL CHECK (price > 0),
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category VARCHAR(50)
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);
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-- =======================================================
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-- ORDERS TABLE
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-- =======================================================
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CREATE TABLE orders (
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id SERIAL PRIMARY KEY,
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user_id INT NOT NULL,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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total_price NUMERIC(10,2) NOT NULL DEFAULT 0,
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CONSTRAINT fk_orders_user
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FOREIGN KEY (user_id)
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REFERENCES users(id)
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ON DELETE CASCADE
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);
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-- =======================================================
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-- ORDER DETAIL TABLE
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-- =======================================================
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CREATE TABLE order_details (
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id SERIAL PRIMARY KEY,
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order_id INT NOT NULL,
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menu_item_id INT NOT NULL,
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quantity INT NOT NULL CHECK (quantity > 0),
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price_at_purchase NUMERIC(10,2) NOT NULL,
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CONSTRAINT fk_order_details_order
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FOREIGN KEY (order_id)
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REFERENCES orders(id)
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ON DELETE CASCADE,
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CONSTRAINT fk_order_details_menu_item
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FOREIGN KEY (menu_item_id)
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REFERENCES menu_items(id)
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);
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-- =======================================================
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-- INITIAL MENU DATA
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-- =======================================================
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INSERT INTO menu_items (name, description, price, category) VALUES
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('Margherita Pizza', 'Classic cheese pizza', 10.00, 'Pizza'),
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('Cheeseburger', 'Beef burger with cheese', 8.50, 'Burger'),
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('Spaghetti Bolognese', 'Pasta with meat sauce', 12.00, 'Pasta'),
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('Coca Cola', 'Cold soft drink', 2.50, 'Drink');
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-- =======================================================
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-- OPTIONAL TEST USER
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-- =======================================================
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INSERT INTO users (username, password, email) VALUES
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('admin', 'hashed_password_here', 'admin@example.com');
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-- =======================================================
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-- VERIFICATION QUERIES
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-- =======================================================
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-- SELECT * FROM users;
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-- SELECT * FROM menu_items;
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-- SELECT * FROM orders;
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-- SELECT * FROM order_details; |