条件异常处理

mysql> call actor_insert();

ERROR 1062 (23000): Duplicate entry ‘1‘ for key ‘PRIMARY‘

A numeric error code (1146). This number is MySQL-specific and is not portable to other database systems.

A five-character SQLSTATE value (‘23000‘). The values are taken from ANSI SQL and ODBC and are more standardized.

--标准错误码捕获

DECLARE CONTINUE HANDLER FOR SQLSTATE ‘23000‘ SET @x2 = 1;

--捕获 mysql-error-code：

DECLARE CONTINUE HANDLER FOR 1062 SET @x2 = 1;

--事先定义 condition_name：

DECLARE DuplicateKey CONDITION FOR SQLSTATE ‘23000‘;

DECLARE CONTINUE HANDLER FOR DuplicateKey SET @x2 = 1;

--捕获 SQLEXCEPTION

DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET @x2 = 1;

·SQLWARNING 是对所有以 01 开头的 SQLSTATE 代码的速记。

·NOT FOUND 是对所有以 02 开头的 SQLSTATE 代码的速记。

·SQLEXCEPTION 是对所有没有被 SQLWARNING 或 NOT FOUND 捕获的 SQLSTATE 代码的速记

条件异常处理

原文：http://www.cnblogs.com/askme/p/6364433.html