db-schema/db_scripts/diff/15643.down

USE provisioning;
set autocommit = 0;

SELECT id INTO @pref_id_min FROM voip_preferences WHERE attribute='ext_range_min';
SELECT id INTO @pref_id_max FROM voip_preferences WHERE attribute='ext_range_max';
DELETE FROM voip_preferences WHERE id IN (@pref_id_min, @pref_id_max);

commit;