37 lines
1.9 KiB
SQL
37 lines
1.9 KiB
SQL
CREATE TABLE users (
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id SERIAL PRIMARY KEY,
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username VARCHAR(50) UNIQUE NOT NULL,
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password_hash VARCHAR(255) NOT NULL,
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email VARCHAR(100)
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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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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,
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CONSTRAINT fk_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
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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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unit_price NUMERIC(10, 2) NOT NULL,
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CONSTRAINT fk_order FOREIGN KEY (order_id) REFERENCES orders(id) ON DELETE CASCADE,
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CONSTRAINT fk_menu_item FOREIGN KEY (menu_item_id) REFERENCES menu_items(id)
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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 and tomato', 10.00, 'Pizza'),
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('Cheeseburger', 'Beef patty with cheese', 8.00, 'Burger'),
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('Spaghetti Carbonara', 'Pasta with creamy sauce and bacon', 12.00, 'Pasta'); |