-- PostgreSQL 初始化脚本
-- 创建测试表和数据
-- 用户表
CREATE TABLE users (
id SERIAL PRIMARY KEY,
username VARCHAR(50) UNIQUE NOT NULL,
email VARCHAR(100) UNIQUE NOT NULL,
full_name VARCHAR(100),
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
-- 产品表
CREATE TABLE products (
id SERIAL PRIMARY KEY,
name VARCHAR(100) NOT NULL,
description TEXT,
price DECIMAL(10, 2),
stock_quantity INTEGER DEFAULT 0,
category VARCHAR(50),
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
-- 订单表
CREATE TABLE orders (
id SERIAL PRIMARY KEY,
user_id INTEGER REFERENCES users(id),
total_amount DECIMAL(10, 2),
status VARCHAR(20) DEFAULT 'pending',
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
-- 订单项表
CREATE TABLE order_items (
id SERIAL PRIMARY KEY,
order_id INTEGER REFERENCES orders(id),
product_id INTEGER REFERENCES products(id),
quantity INTEGER NOT NULL,
unit_price DECIMAL(10, 2)
);
-- 插入测试数据
INSERT INTO users (username, email, full_name) VALUES
('john_doe', 'john@example.com', 'John Doe'),
('jane_smith', 'jane@example.com', 'Jane Smith'),
('mike_wilson', 'mike@example.com', 'Mike Wilson');
INSERT INTO products (name, description, price, stock_quantity, category) VALUES
('Laptop', 'High-performance laptop for professionals', 1299.99, 10, 'Electronics'),
('Mouse', 'Wireless optical mouse', 29.99, 50, 'Electronics'),
('Keyboard', 'Mechanical gaming keyboard', 89.99, 25, 'Electronics'),
('Book: SQL Mastery', 'Complete guide to SQL database management', 39.99, 100, 'Books'),
('Coffee Mug', 'Ceramic coffee mug with logo', 12.99, 75, 'Accessories');
INSERT INTO orders (user_id, total_amount, status) VALUES
(1, 1329.98, 'completed'),
(2, 102.98, 'pending'),
(3, 42.98, 'completed');
INSERT INTO order_items (order_id, product_id, quantity, unit_price) VALUES
(1, 1, 1, 1299.99),
(1, 2, 1, 29.99),
(2, 3, 1, 89.99),
(2, 5, 1, 12.99),
(3, 4, 1, 39.99),
(3, 5, 1, 12.99);
-- 创建索引以提高查询性能
CREATE INDEX idx_users_email ON users(email);
CREATE INDEX idx_orders_user_id ON orders(user_id);
CREATE INDEX idx_order_items_order_id ON order_items(order_id);
CREATE INDEX idx_order_items_product_id ON order_items(product_id);
CREATE INDEX idx_products_category ON products(category);
