Presentations at pre-FOSDEM'17 MySQL Day

I am currently at FOSDEM in Brussels attending a lot of interesting presentations in the MySQL and Friends devroom.  Yesterday the MySQL community team organized a pre-FOSDEM MySQL Day, where I delivered two talks.  The slides for my talks can be found on Slideshare:

• MySQL 8.0: Common Table Expressions 
• Using Optimizer Hints to Improve MySQL Query Performance