Learning SQL
SQL Zoo
Use SQLZoo to practice, test and improve your skills to bring your SQL to the next level.
SQL Noir
Learn SQL by solving crimes, querying tables and finding clues.
SQL Murder Mystery
Using a similar theme as SQL Noir, here's SQL Murder Mystery:
There's been a Murder in SQL City! The SQL Murder Mystery is designed to be both a self-directed lesson to learn SQL concepts and commands and a fun game for experienced SQL users to solve an intriguing crime.
SQLBolt
SQLBolt provides a set of interactive lessons and exercises to help you learn SQL