I’ve continued my SQL development by going to a website called sql-ex.com. Its simple and fun and you get points the more questions you complete. Each solution gives you from 1-4 points depending on the difficulty. I got 17 points today so far as shown below (queried 15 questions correctly):
Learning SQL is actually not that hard, it just takes practice and focus. Its great that they’ve gameified SQL too as a way to learn and complete at the same time. Their is a leaderboard everyday and they even have a certification exam which you can take for a small fee. All of the exercises and website are free though. I highly recommend sql-ex.com !