When comparing SQLZoo vs SoloLearn, the Slant community recommends SoloLearn for most people. In the question“What are the best websites to learn to code?” SoloLearn is ranked 19th while SQLZoo is ranked 39th.
Ranked in these QuestionsQuestion Ranking
Pro Embedded editors
Each tutorial page has multiple practice questions which include an editor for you to type your code and see the result.
Pro Really in-depth
SQLZoo offers very detailed tutorials on SQL that include program examples.
Pro Completely free
Pro Offline learning mode for mobile apps
Allows learning while disconnected from the net.
Pro Easy for beginners
Anyone can get started with this.
Pro Share and modify others' projects
Pro Browser-based code playgrounds
No software installation needed, just a modern web browser. On mobile devices though the mobile apps are highly recommended.
Pro Excellent mobile apps available
XP, levels, badges, certificates, etc.
Con Lack of community
SQLZoo does not have a forum or any aids for assisting with quizzes (such as hints).
Con Only the most commonly used languages are covered.
Con Limited usefulness for intermediate or experienced programmers
No advanced coding challenges. Look for those on other sites like hackerrank.