Welcome to Acubens
Master the Art of
SQL Databases
A comprehensive journey from basic queries to advanced database management. Learn SELECT, JOIN, subqueries, transactions, indexing, and more.
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SELECT u.name, COUNT(o.id) AS orders, SUM(o.total) AS revenue FROM users u LEFT JOIN orders o ON u.id = o.user_id WHERE u.active = 1 GROUP BY u.id ORDER BY revenue DESC LIMIT 10;
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