为什么MySQL执行插入行,然后在调用回滚时删除它?例如,使用以下代码:declare exit handler for sqlwarning rollback;declare exit handler for sqlexception
select last_insert_id();END;
INSERT I
p ActiveRecord::Base.connection.execute("SELECT auto_increment FROM information_schema.tables WHERE table_schemap ActiveRecord::Base.connection.execute("SELECT auto_increment FROM information_schema.tables WHERE table_schema
当我获得到pdo的长连接时,执行事务插入操作,我手动断开连接或mysql自动断开连接一段时间,我重新获取连接执行事务将继续执行最后一个操作,导致数据插入到数据库中$pdoOptions){ echo ('The exception triggered by the second rollback:' .e2->getMessage());
$dbh = new \PDO("mysql:host=localhost;dbname=dbname", 'usernamehere', 'passwordhere');$dbh->beginTransaction();
$sql = "CREATE TABLE IF NOT EXISTS `a` (`id` int(11) NOT NULL AUTO_INCREMENTDEFAULT CH
这是我的表IdBeneficio int unsigned primary key auto_increment not null, signal sqlstate '45000' set message_text = 'Beneficio no encontrado', mysql_errnotipoBeneficio);