在Mysql存储过程中使用事务实例_MySQL
CREATE DEFINER=`root`@`localhost` PROCEDURE `createBusiness`(parameter1 int)
BEGIN
#Routine body goes here...
DECLARE flag int DEFAULT parameter1;#声明变量flag,将参数值赋给该变量
DECLARE uuidStr VARCHAR(32);#声明一个长度为32位的字符串
DECLARE currentTime TIMESTAMP;#声明一个类型为时间戳的变量
declare err INT default 0;#声明一个整形变量err,默认值是0
declare continue handler for sqlexception set err=1;#当sqlexception handler捕捉到异常时,设置err=1
START TRANSACTION;#开始事务
WHILE flag>0 DO #注意: while不能空实现(在while块中,里面必须有语句)
#uuid()函数得到的字符串是'6ccd780c-baba-1026-9564-0040f4311e29',剔除里面的-,得到一个32位的字符串
SET uuidStr = REPLACE(UUID(),'-','') ;
#得到当前的时间
SET currentTime = CURRENT_TIMESTAMP();
#执行插入语句,注意连接字符串的函数concat(str1,str2,...);其中str..也可以是数字类型
INSERT INTO
表名称
(id,title,keyword,hasImage,isTodayHead,isShowInHome,isBigness,publishTime,originId,modify_time,isAnalysis)
VALUE
(uuidStr,CONCAT('事件标题',flag),CONCAT('关键字',flag),1,1,0,0,currentTime,CONCAT('xxxxxxx',flag),currentTime,1);
#每循环一次,flag要减去1,注意没有flag--的语法
set flag = flag-1;
#在这里测试当err=1时,事务是否有了回滚,测试ok
#IF flag=7 THEN #注意在procedure中给变量赋值要用到set,或在变量声明时用default来父子,所以=号可以用来比较两边的值是否相等,也可,区别先不去纠结。
#set err=1;
#END if;
END WHILE;
IF (err=0) THEN
commit;
select 'OK';
ELSE
rollback;
select 'err';
END IF;
END;

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