When writing my introduction to SQL, I included sample queries that all dealt with the same hypothetical database. The database wasn’t especially fancy or well-planned, it just had a book’s title, location, publisher, and publication year. While you could read it and imagine the query, it didn’t give any hands-on experience, which I’ve found is the best way to learn. Rather than expect you to set up a database, I used a site called SQLFiddle to make a version of this hypothetical data...
