USE provisioning;
SET autocommit=0;

UPDATE voip_preferences SET expose_to_customer = 0 where attribute = 'sound_set';

DROP VIEW v_sound_set_files;

ALTER TABLE voip_sound_files
    DROP COLUMN use_parent,
    DROP KEY handle_set_id_idx (handle_id, set_id),
    ADD KEY handle_id_ref;

ALTER TABLE voip_sound_sets
    DROP FOREIGN KEY vss_parent_id_ref,
    DROP COLUMN parent_id,
    DROP COLUMN expose_to_customer;

COMMIT;