salix/db/changes/10250-curfew/02-travel.sql

ALTER TABLE `vn`.travel
    DROP FOREIGN KEY travel_ibfk_4;

ALTER TABLE `vn`.travel
    ADD CONSTRAINT supplierFreighter_fk_4
        FOREIGN KEY (cargoSupplierFk) REFERENCES supplierFreighter (supplierFk)
            ON UPDATE CASCADE ON DELETE SET NULL;