ALTER LARGE OBJECT — change the definition of a large object
ALTER LARGE OBJECTlarge_object_oidOWNER TO {new_owner| CURRENT_USER | SESSION_USER }
   ALTER LARGE OBJECT changes the definition of a
   large object. The only functionality is to assign a new owner.
   You must be superuser or owner of the large object to use
   ALTER LARGE OBJECT.
  
large_object_oidOID of the large object to be altered
new_ownerThe new owner of the large object
   There is no ALTER LARGE OBJECT statement in the SQL
   standard.