Wow… To think you'd leave such an amazing review - as an instructor, I truly feel like I've received a wonderful gift 🙏 This review seemed to provide even deeper insights into my course than I had myself, which was so moving, and because I wanted to write a thoughtful reply, I ended up being way too late 😂 As you mentioned, I believe the SQLD exam isn't simply a "memorization test," but rather the core is the process of directly writing queries to discover and internalize the rules. You pinpointed this exactly, which made me reflect on my own course again. Especially the part where you didn't just memorize rules like 'having-group by-select-order by' but understood and internalized why they work that way - I think that's the most fundamental attitude toward SQL. Starting from no background, overcoming the overwhelming feeling through practice, and finally achieving the success of passing - that's truly an amazing journey 🎉 I sincerely hope that this passing experience will serve as a solid foundation not only for SQL but also for data analysis and your overall career going forward 🚀