[MySQL]MySQL的signal sqlstate

[code]drop trigger trig_test;
create trigger trig_test before insert on udf_update_delivery
for each row
begin
declare msg varchar(20);
set msg='提交数据错误,请检查';
if new.delivery_no like '99-300101%' then
signal sqlstate '45000' set message_text=msg;
end if;
end;

insert into udf_update_delivery(delivery_no,is_update,update_date)
values('99-300101111',1,'2020-03-10')

drop trigger trig_srm_delivery_head;
create trigger trig_srm_delivery_head before insert on srm_delivery_head
for each row
begin
declare msg varchar(20);
set msg='提交数据错误,请检查';
if new.delivery_no like '99-300101%' then
signal sqlstate '45000' set message_text=msg;
end if;
end;