(Video is an advanced course of MySQL and a necessary course for interview and promotion. In this course, MySQL optimization is deeply analyzed 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 four parts: 1 MySQL storage principle and efficiency improvement 2 SQL optimization and optimization tools 3 MySQL comprehensive optimization 4 MySQL lock mechanism and optimization principle. Handle the details and principle analysis of MySQL optimization in work and interview.)