46 lines
1.4 KiB
SQL
46 lines
1.4 KiB
SQL
CREATE TABLE users (
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id SERIAL PRIMARY KEY,
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username VARCHAR(20) NOT NULL UNIQUE,
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password VARCHAR(20) NOT NULL,
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email VARCHAR(100) UNIQUE
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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(50) 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 INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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created_at TIMESTAMP NOT NULL,
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total_price NUMERIC(10, 2) NOT NULL CHECK (total_price >= 0)
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);
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CREATE TABLE order_detail(
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id SERIAL PRIMARY KEY,
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order_id INTEGER NOT NULL REFERENCES orders(id) ON DELETE CASCADE,
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menu_item_id INTEGER NOT NULL REFERENCES menu_items(id),
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quantity INTEGER NOT NULL CHECK (quantity > 0),
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price NUMERIC(10, 2) NOT NULL CHECK (price > 0)
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);
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INSERT INTO menu_items (name, description, price, category)
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VALUES
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('Margherita Classica', 'Tomato sauce, fresh mozzarella, and basil on a crispy thin crust', 16.00, 'Pizza'),
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('Smoked BBQ Bacon Burger', 'Angus beef with cheddar, bacon, onion rings, and BBQ sauce on a brioche bun.', 14.50, 'Burger'),
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('Truffle Mushroom Fettuccine', 'Creamy fettuccine with mushrooms, Parmesan, and a touch of truffle oil.', 18.00, 'Pasta'),
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('Cola', 'Cold soft drink', 2.50, 'Drink');
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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_detail; |