http://www.theregister.co.uk/2013/09/12/google_mariadb_mysql_migration/ http://www.theregister.co.uk/2013/09/12/google_mariadb_mysql... My guess is there isn't

http://www.theregister.co.uk/2013/09/12/google_mariadb_mysql_migration/ http://www.theregister.co.uk/2013/09/12/google_mariadb_mysql... My guess is there isn't an enforced MySQL version across all of Google. "We asked Google for more information, and the company sent us a statement which said: "Google's MySQL team is in the process of moving internal users of MySQL at Google from MySQL 5.1 to MariaDB 10.0. Google's MySQL team and the SkySQL MariaDB team are looking forward to working together to advance the reliability and feature set of MariaDB."