117笔记问答在MySQL中，可以使用整数类型（如TINYINT、SMALLINT、MEDIUMINT、INT和BIGINT）来存储整数值
- 创建一个包含整数类型的表：
CREATE TABLE sales_data (
id INT AUTO_INCREMENT PRIMARY KEY,
product_id INT,
quantity_sold INT,
price_per_unit DECIMAL(10, 2)
);
- 向表中插入数据：
INSERT INTO sales_data (product_id, quantity_sold, price_per_unit)
VALUES (1, 10, 99.99),
(2, 5, 49.99),
(3, 20, 199.99),
(1, 30, 99.99),
(2, 15, 49.99);
- 查询每个产品的总销售量：
SELECT product_id, SUM(quantity_sold) as total_sales FROM sales_data GROUP BY product_id;
- 查询每个产品的平均销售价格：
SELECT product_id, AVG(price_per_unit) as average_price FROM sales_data GROUP BY product_id;
- 查询销售量最高的产品：
SELECT product_id, SUM(quantity_sold) as total_sales FROM sales_data GROUP BY product_id ORDER BY total_sales DESC LIMIT 1;
- 查询销售额最高的产品：
SELECT product_id, SUM(quantity_sold * price_per_unit) as total_revenue FROM sales_data GROUP BY product_id ORDER BY total_revenue DESC LIMIT 1;
这些示例展示了如何使用MySQL整数类型进行简单的数据分析。实际应用中，你可能需要根据具体需求编写更复杂的查询语句。