What it does
SQLZoo provides SQL tutorials that progress through selections, aggregates, joins, nested queries and null values.
Work through one tutorial table before switching topics. The World, Nobel and movie examples give query operations concrete data to act on. As the lessons introduce joins or nested selections, compare the result with a simpler query you already understand. The thematic datasets help explain why a particular operation is useful. Multiple-choice quizzes complement the query tutorials. Later sections cover window functions and creating or importing a database, so choose the exercise format as well as the SQL topic.
Sources
- SQLZoo (Oct 26, 2026)
- SELECT from WORLD Tutorial | SQLZoo (Oct 26, 2026)
- SELECT Quiz | SQLZoo (Oct 26, 2026)