62 lines
1.5 KiB
SQL
62 lines
1.5 KiB
SQL
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CREATE DATABASE restaurant_db;
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DROP TABLE IF EXISTS order_details;
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DROP TABLE IF EXISTS orders;
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DROP TABLE IF EXISTS menu_items;
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DROP TABLE IF EXISTS users;
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CREATE TABLE users
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(
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id SERIAL PRIMARY KEY,
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username VARCHAR(50) NOT NULL UNIQUE,
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password VARCHAR(64) 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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(
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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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(
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id SERIAL PRIMARY KEY,
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user_id INTEGER NOT NULL,
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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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total_price NUMERIC(10,2) NOT NULL CHECK(total_price >= 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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CREATE TABLE order_details
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(
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id SERIAL PRIMARY KEY,
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order_id INTEGER NOT NULL,
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menu_item_id INTEGER NOT NULL,
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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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CONSTRAINT fk_detail_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_detail_menu
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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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INSERT INTO menu_items(name,description,price,category)
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VALUES
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('Pizza Margherita','Classic pizza',10.00,'Pizza'),
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('Cheese Burger','Beef burger',8.00,'Burger'),
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('Chicken Pasta','Creamy pasta',12.00,'Pasta'),
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('Cola','Cold drink',2.50,'Drink'); |