(The video is an advanced MySQL course and a required course for interviews and job hunting. In the course, in-depth analysis of MySQL optimization is conducted in the form of case analysis, and the use of common analysis tools for MySQL optimization is introduced. This set of courses mainly explains MySQL optimization and principles, including 4 parts: 1. MySQL storage principles and efficiency improvement 2. SQL optimization and optimization tools 3. MySQL comprehensive optimization 4. MySQL lock mechanism and optimization principles. After completing this set of courses, you can easily deal with the details and principle analysis of MySQL optimization in work and interviews.)