Thank you, instructor. If I had studied alone without the lecture, it would have been scary to think about how much time it would have taken, how much I would have struggled, how much I would have understood, etc. Since I already use QueryDsl in my work, I set my final goal to complete QueryDsl, and I started from JPA Basics during the Lunar New Year holiday and completed this lecture, 3/5 of the way there.. I was so scared at first because there were so many lectures.. But I can see the end! I will run the remaining Spring Data JPA lectures and QueryDSL lectures! Thank you so much for the great lecture that is easy to understand. ( _ _ )