Review and consolidate your SQL skills with tons of interactive exercises! In this learning path, you’ll practice SQL JOINs, aggregation with GROUP BY and HAVING, and subqueries (including correlated subqueries).Start learning
20 free interactive coding challenges
If you know the basics of SQL and want to keep your coding skills up-to-date, this learning path is for you. These SQL skills can be used with PostgreSQL, MySQL, Oracle, SQL Server, and SQLite database engines. Scroll down for details.
SQL is the most universal database language. Despite the recent explosion of NoSQL, SQL is becoming the preferred interface for data analysis. Whether you’re a student, a business professional, or an SQL enthusiast who’s simply eager to sharpen your skills, there’s always room for improvement.
The SQL Practice path will test your basic SQL knowledge and show you where you need to improve. With plenty of real-world examples and challenging exercises, you’ll brush up your SQL coding skills before you know it. Preparing for an interview? Completing this learning path will help you nail it!
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Consolidate your knowledge of operating on two or more data tables in PostgreSQL database. This online practice set consists of 93 interactive exercises and will help you polish your SQL joining skills.
This online practice set consists of 88 interactive exercises. You will practice using simple statements and clauses, like SELECT or JOIN, as well as more advanced concepts, such as subqueries.