ALTER TABLE `vn`.`workerConfig` ADD payMethodFk tinyint(3) unsigned NULL;
ALTER TABLE `vn`.`workerConfig` ADD CONSTRAINT workerConfig_FK FOREIGN KEY (roleFk) REFERENCES account.`role`(id) ON DELETE RESTRICT ON UPDATE CASCADE;
ALTER TABLE `vn`.`workerConfig` ADD CONSTRAINT workerConfig_FK_1 FOREIGN KEY (payMethodFk) REFERENCES `vn`.`payMethod`(id) ON DELETE SET NULL ON UPDATE CASCADE;

UPDATE `vn`.`workerConfig`
    SET payMethodFk = 4
    WHERE id=1;