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SQLZoo

Learn SQL step by step through interactive tutorials and quizzes

Visit SQLZoo

SQLZoo is a free, browser-based tutorial site for learning SQL. It offers a sequence of numbered lessons covering SELECT queries, pattern matching, subqueries, aggregate functions, JOINs, NULL handling, window functions, self joins, and DDL. Each lesson is paired with a quiz to test understanding. A reference section documents common SQL tasks such as creating and dropping tables, inserting and deleting records, working with dates, using functions, managing users, and querying metadata. Additional material includes video tutorials on running MySQL with PHP and Apache, transactions, and connecting to a database from C#. Assessment exercises with graded questions are provided for more confident learners, along with scenario-based examples such as hotel bookings, wholesaler data, university timetables, and music performances.

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