MySQL 9.5 Release Notes
The ENABLED_ROLES table provides
information about the roles that are enabled within the current
session.
The ENABLED_ROLES table has these
columns:
ROLE_NAMEThe user name part of the granted role.
ROLE_HOSTThe host name part of the granted role.
IS_DEFAULTYESorNO, depending on whether the role is a default role.IS_MANDATORYYESorNO, depending on whether the role is mandatory.