DELETE FROM asset.call_number WHERE owning_lib IN
(SELECT (actor.org_unit_descendants(id)).id from actor.org_unit where shortname = :ou_to_del);
-UPDATE asset.call_number acn SET owning_lib = ac.circ_lib
-FROM asset.copy ac
-WHERE ac.call_number = acn.id
-AND acn.owning_lib IN
-(SELECT (actor.org_unit_descendants(id)).id from actor.org_unit where shortname = :ou_to_del)
-AND acn.id IN
-(SELECT call_number FROM asset.copy WHERE circ_lib NOT IN
- (SELECT (actor.org_unit_descendants(id)).id from actor.org_unit where shortname = :ou_to_del));
+DELETE FROM asset.call_number_prefix WHERE owning_lib IN
+(SELECT (actor.org_unit_descendants(id)).id from actor.org_unit where shortname = :ou_to_del);
+
+DELETE FROM asset.call_number_suffix WHERE owning_lib IN
+(SELECT (actor.org_unit_descendants(id)).id from actor.org_unit where shortname = :ou_to_del);
COMMIT;