SQLBolt
A set of short interactive lessons that teach SQL by having you write queries against small tables right in the page, from SELECT and filtering through joins, aggregates, and creating and altering tables. It takes an afternoon or two and needs no database install, which makes it one of the fastest ways to get comfortable with the basics. It does not cover indexing, query plans or database design, so follow it with a deeper resource once queries feel natural.
Course
Web Development
SQLBolt
A few hours
Beginner
Free
A set of short interactive lessons that teach SQL by having you write queries against small tables right in the page, from SELECT and filtering through joins, aggregates, and creating and altering tables. It takes an afternoon or two and needs no database install, which makes it one of the fastest ways to get comfortable with the basics. It does not cover indexing, query plans or database design, so follow it with a deeper resource once queries feel natural.
Ready to start?
Opens on SQLBolt in a new tab.
Stuck on something specific?
Writing only gets you so far. If you want an answer to your situation rather than the general case, book a session and we will work through it together. Sessions are free for approved Sefism members, and a few slots open each week.
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