Thanks to this course, I believe I was able to grow one step further in query tuning, which I previously thought was difficult. Even though I selected English as the language, I was able to complete the course relatively quickly thanks to the Korean subtitles. Thank you for providing such a great course in a convenient way.

This is a recommended course if you want to properly learn about advanced queries. You can easily learn advanced query usage techniques that you can't learn anywhere else through examples. It was great that you provided structural analysis of execution plans, and it was even better to understand by changing your thinking to a programming language approach.

The explanation is really easy to understand, which is great! Especially the part where you explained the concepts with Java code - it really helped me understand well!

perfact

You can acquire basic to advanced knowledge of SQL. Combining with major textbooks or famous books will aid in deeper understanding.