DELIMITER $$
CREATE OR REPLACE DEFINER=`vn`@`localhost` TRIGGER `vn`.`cmr_beforeDelete`
	BEFORE DELETE ON `cmr`
	FOR EACH ROW
BEGIN 
	IF NOT (OLD.companyFk <=> NULL AND OLD.addressFromFk <=> NULL AND OLD.packagesList <=> NULL) THEN
		CALL util.throw("Can not delete cmr, fields required not empty");
	END IF;
END$$
DELIMITER ;
