【转】mysql 存储过程的示例

原文地址：https://blog.csdn.net/lishaojun0115/article/details/50183661

 begin
 #定义变量
 declare local_sender varchar(20);
 declare local_receiver varchar(20);
 declare local_status int;
 #创建游标
 declare local_message cursor for select patientid,doctorid from
 tb_purchaseservice_relation where state=1 and createtime<date_sub(now(),interval 2 day );
 DECLARE CONTINUE HANDLER FOR NOT FOUND SET local_status=0;
 set local_status=0;
 #打开游标
 open local_message;
 set local_status=(select count(*) from tb_purchaseservice_relation where state=1 and createtime<date_sub(now(),interval 2 day ));
 #while循环
 while local_status>0 do
 #给游标赋值
 fetch local_message into local_sender,local_receiver;
 if(local_status>0) then
  insert into tb_messagecenter(typeid,sender,receiver,content,isLooked,title,isDeal,dealResult)
 values(807,concat('s_',807),local_sender,concat('您购买',local_receiver,'的服务未处理，已失效'),0, '购买服务失效',0,3 );
  insert into tb_pushmessage(MessageText,doctorId,patientId,channelId,pushType,messagetype,messageTitle)
  values(concat('您购买',local_receiver,'的服务未处理，已失效'),concat('s_',807),local_sender,local_sender,1,807,'购买服务失效');
 set local_status=(local_status-1);
 end if;
 end while;
 insert into tb_purchaseservice_history(purchaseId,patientId,doctorId,state,consumePoint,transfertime)
 select purchaseId,patientid,doctorid,5 as state,consumePoint,createtime from tb_purchaseservice_relation
 where state=1 and createtime<date_sub(now(),interval 2 day );
 delete from tb_purchaseservice_relation where state=1 and createtime <date_sub(now(),interval 2 day );
 #结束游标
 close local_message;
 end