SELECT old.account_number,
       old.attribute6,
       NEW.attribute6,
       old.attribute17,
       NEW.attribute17
FROM apps.hca_save_for_datafix old,
     apps.hz_cust_accounts NEW
WHERE old.cust_account_id = NEW.cust_account_id
  AND (old.attribute6 != NEW.attribute6 OR old.attribute17 != NEW.attribute17)
;