administrable_role_authorizations
   The view administrable_role_authorizations
   identifies all roles that the current user has the admin option
   for.
  
Table 36.2. administrable_role_authorizations Columns
| Name | Data Type | Description | 
|---|---|---|
| grantee | sql_identifier | Name of the role to which this role membership was granted (can be the current user, or a different role in case of nested role memberships) | 
| role_name | sql_identifier | Name of a role | 
| is_grantable | yes_or_no | Always YES |