ALTER LARGE OBJECT
ALTER LARGE OBJECT — change the definition of a large object
Synopsis
ALTER LARGE OBJECTlarge_object_oidOWNER TO {new_owner| CURRENT_USER | SESSION_USER }
Description
ALTER LARGE OBJECT changes the definition of a large object. 
 You must own the large object to use ALTER LARGE OBJECT. To alter the owner, you must also be a direct or indirect member of the new owning role. (However, a superuser can alter any large object anyway.) Currently, the only functionality is to assign a new owner, so both restrictions always apply. 
Parameters
- large_object_oid
- OID of the large object to be altered 
- new_owner
- The new owner of the large object 
Compatibility
 There is no ALTER LARGE OBJECT statement in the SQL standard.