-- Place your SQL code here
ALTER TABLE vn.priceDelta ADD IF NOT EXISTS zoneGeoFk int(11) NULL COMMENT 'Application area for the bonus component';
ALTER TABLE vn.priceDelta ADD CONSTRAINT priceDelta_zoneGeo_FK FOREIGN KEY IF NOT EXISTS (zoneGeoFk) REFERENCES vn.zoneGeo(id) ON DELETE RESTRICT ON UPDATE CASCADE;