mysql存储过程

BEGIN
 
 DECLARE orderNo varchar(100) DEFAULT null;
 select order_no into orderNo from t_orderpay where order_no=p2 and step='2';
 if orderNo <>'' and left(orderNo,3)='JXS'
  then
  insert into t_message(mtype,title,createtime) VALUES(p1,'测试',now());
 END IF ;
END