When comparing SQLBolt 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 18th while SQLBolt is ranked 36th.
Ranked in these QuestionsQuestion Ranking
Pro Comprehensive material
The lessons and topics are comprehensive and cover the important details of using SQL.
Pro Interactive lessons
There are a series of interactive lessons to learn the basics of SQL, all from within your browser.
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 Very few intermediate topics
The tutorial is designed to give beginners an understanding of the basics of SQL. They have started introducing intermediate topics, but currently there is only 3 to choose from.
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.