DROP GROUP
Name
DROP GROUP -- remove a user group
Description
   DROP GROUP removes the specified group.  The
   users in the group are not removed.
  
Parameters
- name
-       The name of an existing group.
      
Notes
   It is unwise to drop a group that has any
   granted permissions on objects.  Currently, this is not enforced,
   but it is likely that future versions of
   PostgreSQL will check for the error.
  
Examples
   To drop a group:
DROP GROUP staff;
  
Compatibility
   There is no DROP GROUP statement in the SQL standard.