在实时数据分析中，SQL的TOP N子句被广泛应用于查询和处理大量数据
SELECT product_id, product_name, SUM(sales) as total_sales
FROM sales_data
GROUP BY product_id, product_name
ORDER BY total_sales DESC
LIMIT N;
SELECT keyword, COUNT(*) as search_count
FROM search_logs
GROUP BY keyword
ORDER BY search_count DESC
LIMIT N;
SELECT page_url, COUNT(*) as page_views
FROM user_activity_logs
GROUP BY page_url
ORDER BY page_views DESC
LIMIT N;
SELECT server_id, AVG(cpu_usage) as avg_cpu_usage
FROM realtime_data
GROUP BY server_id
ORDER BY avg_cpu_usage DESC
LIMIT N;
总之，在实时数据分析中，SQL的TOP N子句可以帮助我们快速发现数据中的重要信息，从而为决策提供有力支持。
