USE provisioning;
set autocommit=0;

SELECT id FROM voip_preferences WHERE attribute='advice_of_charge' INTO @aoc_attr_id;

DELETE FROM voip_preferences_enum where preference_id = @aoc_attr_id;
DELETE FROM voip_preferences where id = @aoc_attr_id;

ALTER TABLE billing.billing_profiles DROP COLUMN `advice_of_charge`;
commit;