Help with circumvention of ORA-01472: cannot use connect by on view with ..

Question

Hi,
Any help resolving the following would be v. helpful.
The Aim
Produce a hierarchical report of all users and the privileges they have via the various roles they are granted.
The SQL
select lpad(' ', level*2,' ')|| granted_role from (select grantee, granted_role
from dba_role_privs
union
select role, granted_role
from role_role_privs
union
select role, privilege
from role_sys_privs
union
select 'All users', username
from dba_users)
start with grantee='All users'
connect by prior granted_role = grantee;
The error
ORA-0147: cannot use connect by on view with DISTINCT, GROUP BY, etc.
The database
Oracle 8.1.7.4 (Yes I know ....)
The Solution
[Thanks in advance]

Answer 1

What if you create a table first
create table role_grants as
    select granted_role, grantee
       from (select grantee, granted_role
               from dba_role_privs
             union
             select role, granted_role
               from role_role_privs
             union
             select role, privilege
               from role_sys_privs
             union
             select 'All users', username
              from dba_users)
Then run the hierarchical report
select lpad(' ', level*2,' ')|| granted_role
   from role_grants
   start with grantee='All users'
   connect by prior granted_role = grantee