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为什么mysql事务执行不了?解决办法

Jun 13, 2016 am 10:17 AM
innodb mysql nbsp quot sql

为什么mysql事务执行不了?
php代码片断:  

/*-----数据库连接参数--*/  

$host="localhost";  

$user="root";  

$pwd="xxx";  

$database="luntan";  

/*-----数据库连接-*/  

$db=mysql_connect($host,$user,$pwd);  

$sql="START TRANSACTION;  

  SELECT @A:=MAX(iTopicId) FROM lun_topic;  

  INSERT INTO lun_topic VALUES(@A+1,'主题','内容','作者',NOW(),1);  

  COMMIT;";  

$result=mysql_db_query($database,$sql);//该句执行不了,也不报错  

   

  

表lun_topic  

iTopicId,  

vTitle,  

txtMessage,  

vPostId,  

dPostDateTime,  

iAreaId  

  

---------------------------  

  

注意在MySql中,只有INNODB和BDB类型的表支持事务处理,而缺省的MYISAM类型不支持,可以在创建表的时候指定表类型  

CREATE TABLE t (i INT) TYPE = INNODB;  

  

也可以转换已存在表的表类型  

ALTER TABLE t TYPE=INNODB  

---------------------------  


------解决方案--------------------
你的 $sql 要分作 4 句执行

php 的 mysql 函数,除了定义存储过程外,一次只能执行一条 sql 指令

说的不严密,其实定义存储过程也只是一条指令
------解决方案--------------------
php 的 mysql 函数,除了定义存储过程外,一次只能执行一条 sql 指令

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