一、条件定义

DECLARE condition_name CONDITION FOR condition_vale

condition_value:

sqlstate[value] sqldata_value |mysql教程_error_code

二、条件处理

DECLARE htype HANDLER FOR cond_value[...] sp_statement

handtype_value:

sqlstate [value] saltate_value

|contentname

|sqlwarning

|not found

|sqlexeeption

|mysql_erroe_code

上面是语法，下面我们来通过实例说

mysql>select max(id) from ac

maxid =200;

1row in set (0.00 sec)

mysql->delimiter $$

mysql>

mysql>create procedure actor_insret()

->begin

->set @x=1;

->nsert intoactor(id)values(201)

->sex @x=2;

insert into actor(id)values(202)

->set @x=3;

->end

->$$

query ok, 0 rows afftected (0.00 sec)

mysql->delimiter;

mysql>call actor_insert();

error 1062(23000):dupllicate entyr 202 from key primary

mysql->select @x;

@x

201

1row in set (0.00 sec)

从上面可以看出当主键重复时，不会做其它作操

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