当前位置: 首页 > 图文教程 > 数据库 > MYSQL > MySQL 错误处理例子[译]

MYSQL
MYSQL教程:新手该看的MYSQL操作
php教程:mysql的常用语句
MySQL5数据导入到MySQL3中的具体操作
PHP+MYSQL网站开发中遇到的问题汇总
WordPress的MySQL连接出错监测方法
MSSQL和Mysql自定义函数与存储过程
PHP+MYSQL网站开发中关于时间的问题
MySQL的1067错误解决方案大全
临时表在SQL Server和MySql中创建的方法
PHP+MYSQL+Flash做留言本
MYSQL5.0家族提供的性能跟踪器
替换数据库某字段的内容:REPLACE函数
PHP删除MYSQL数据库中所有表的代码
怎样解决mysql连接过多的错误?
cannot create windows service for mysql.error:0
MySQL的1067错误解决
如何指定MySQL只监听某个特定地址?
把数据从MySQL迁到Oracle的几点注意事项
MySQL默认密码修改的方法
为MySQL的root用户指定一个目录

MYSQL 中的 MySQL 错误处理例子[译]


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2010-01-10   浏览: 169 ::
收藏到网摘: n/a

MySQL 错误处理例子,国外人写的,大家可以参考下。 from http://www.devshed.com/c/a/MySQL/Error-Handling-Examples/
Error Handler Examples
Here are some examples of handler declarations:
If any error condition arises (other than a NOT FOUND ), continue execution after setting l_error=1 :
DECLARE CONTINUE HANDLER FOR SQLEXCEPTION
SET l_error=1;
If any error condition arises (other than a NOT FOUND ), exit the current block or stored program after issuing a ROLLBACK statement and issuing an error message:
DECLARE EXIT HANDLER FOR SQLEXCEPTION
BEGIN
ROLLBACK;
SELECT 'Error occurred – terminating';
END;
If MySQL error 1062 (duplicate key value) is encountered, continue execution after executing the SELECT statement (which generates a message for the calling program):
DECLARE CONTINUE HANDER FOR 106 2
SELECT 'Duplicate key in index';
If SQLSTATE 23000 (duplicate key value) is encountered, continue execution after executing the SELECT statement (which generates a message for the calling program):
DECLARE CONTINUE HANDER FOR SQLSTATE '23000'
SELECT 'Duplicate key in index';
When a cursor fetch or SQL retrieves no values, continue execution after setting l_done=1 :
DECLARE CONTINUE HANDLER FOR NOT
FOUND
SET l_done=1;
Same as the previous example, except specified using a SQLSTATE variable rather than a named condition:
DECLARE CONTINUE HANDLER FOR SQLSTATE '02000 '
SET l_done=1;
Same as the previous two examples, except specified using a MySQL error code variable rather than a named condition or SQLSTATE variable:
DECLARE CONTINUE HANDLER FOR 1329
SET l_done=1;
错误处理例子
有几种错误处理的声明形式:
§ 如果任何错误(不是 NOT FOUND ) , 设置 l_error 为 1 后继续执行:
DECLARE CONTINUE HANDLER FOR SQLEXCEPTION
SET l_error=1;
§ 如果发生任何错误(不是 NOT FOUND), 执行 ROLLBACK和产生一条错误消息后退出当前块或存储过程。
DECLARE EXIT HANDLER FOR SQLEXCEPTION
BEGIN
ROLLBACK;
SELECT 'Error occurred – terminating';
END;
§ 如果 MySQL 1062错误 (重复的健值 )发生,执行 SELECT语句(向调用程序发一条消息)后继续执行
DECLARE CONTINUE HANDER FOR 106 2
SELECT 'Duplicate key in index';
§ 如果 SQLSTATE 2300错误 (重复的健值 )发生,执行 SELECT语句(向调用程序发一条消息)后继续执行
DECLARE CONTINUE HANDER FOR SQLSTATE '23000'
SELECT 'Duplicate key in index';
§ 当游标或者 SQL 选择语句没有返回值时,设置 l_done=1 后继续执行
DECLARE CONTINUE HANDLER FOR NOT
FOUND
SET l_done=1;
§ 此例除了用 SQLSTATE 变量而不是命名条件以外,跟前一个例子一样
DECLARE CONTINUE HANDLER FOR SQLSTATE '02000 '
SET l_done=1;
§ 此例除了用 MySQL 的错误码变量而不是命名条件或者 SQLSTATE 变量以外,跟前两个例子一样
DECLARE CONTINUE HANDLER FOR 1329
SET l_done=1;