I think this is a very good lecture to level up from a SQL newbie to a level that can be used in practice. I have taken about 50% of the course, and the examples provided so far are queries that I have used very frequently in my work, so they are very helpful :) Until now, I only knew how to write simple queries, so I used to copy and paste queries from Google for practiceㅠ However, after listening to the lecture, I think I can write them briefly now, and I think I will be able to use them in more practical ways in the future. Thank you for the great lecture!