useful-qry/function-in-db/triggers/porder_bd_before_delete.sql

drop trigger if exists porder_bd_before_delete;
DELIMITER // 
create trigger porder_bd_before_delete before delete on dbr_porder_bd
    for each row begin
        delete from dbr_purch_bd where porder_bd_id = old.id;
    END//
DELIMITER ;