MySQL 8.0 is a big advance over the previous version 5.7. First is a true data dictionary that keeps meta data in the database and not in dozens of little files; this means you can now have millions of tables in a schema. Add in Common Table Expressions and Windowing functions for a more powerful SQL environment with the ability to use MySQL as a NoSQL JSON document store (No need to set up schemas, indexes, normalize data, or use Structured Query Language). Add in a new schedule that knows how to handle hot rows/columns in your data, histograms, full UTF8MB4 support, better JSON support, and more! Plus learn what happened to MySQL 6.0 and 7.0!