Query AD about all accounts without manager

[AdobeLDAP]

I am new to LDAP. I am trying to query AD about all accounts without manager. The following query will give all the accounts with or without managers.

&(objectCategory=person)(objectClass=user)(!(manager=*)

Does anyone know how to write a query to get all AD accounts without manager?
Thanks!

 

[tsuji]

[1]
>The following query will give all the accounts with or without managers.
>&(objectCategory=person)(objectClass=user)(!(manager=*)
Not sure what filter meant as the parentheses seem very casually distributed.
[2]
>Does anyone know how to write a query to get all AD accounts without manager?
May try this.
[tt] (&(objectCategory=person)(objectClass=user)(!manager=*))[/tt]