Examples

--  USERNAME is the local user name (same as USERPRINCIPALNAME using 
--  Azure AS and Power BI Service)
--  USEROBJECTID is the security identifier in Active Directory and 
--  Azure Active Directory
--  USERPRINCIPALNAME is the user principal name, typically the user 
--  email (it could be different in Active Directory on-premises)
EVALUATE
{
    ( "USERNAME",           USERNAME () ),
    ( "USEROBJECTID",       USEROBJECTID () ),
    ( "USEPRINCIPALNAME",   USERPRINCIPALNAME () )
}