MySQL 触发器示例

MySQL 触发器insert 示例一

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create trigger InsertUser

before insert on user

for each row

Begin

insert into user_group(uid,gid) values(new.uid,'group4444444444');

end;//

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MySQL 触发器insert 示例二

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create trigger InsertUser

before insert on user

for each row

Begin

IF new.Type=2 then

insert into user_group(uid,gid) values(new.uid,'group4444444444');

else

insert into user_group(uid,gid) values(new.uid,'group55555555555')

END IF;

end;//

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MySQL 触发器insert 示例三：

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create trigger InsertUser

before insert on user

for each row

Begin

IF new.type=1 then

insert into user_group(uid,gid) values(new.uid,'578d3369633b47bd9c1fe8bf905cbfb1');

END IF;

IF new.type=2 then

insert into user_group(uid,gid) values(new.uid,'387bcd57fc5a4c3c9de83ee210fef661');

END IF;

end;//

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DELIMITER ;//指定分隔符为";"

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DELIMITER | //指定分隔符为"|",因为触发器语法中存在";"

create trigger trigger_wz_t8_insert_time

before insert on t8

for each row begin

set new.INSERT_TIME= now();

end

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create trigger trigger_wz_t8_update_time

before update on t8

for each row begin

set new.update_time= now();

end

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drop PROCEDURE IF EXISTS `t8` ;

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create procedure `p_delete_t8` ()

begin

DECLARE v_del_partition_name varchar(30);

select CONCAT('t8',DATE_FORMAT(now(),'%d')) INTO v_del_partition_name;

SET @str_exec = concat('alter table t8 truncate partition ', v_del_partition_name);

prepare stmt FROM @str_exec;

execute stmt;

end ;

//

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