MySQL 8.0 introduced roles: a new security and administrative feature that allows DBAs to simplify user management and increases security of multi-user environments. Using roles is easy, once you have digested all the documentation. For the uninitiated, though, the approach could be disappointing, and even give the feeling of not working at all. This quick demo will show some examples of how to deal with roles for several scenarios, how to assign roles to users, and how to use them effectively. Since there are several ways of assigning roles, the examples will cover both the roles granted as default and the cases where users can switch from one role to another within a session.