mysql触发器的三个示例

mysql触发器是mysql数据库的重要概念，下面为您介绍三个mysql触发器的例子，供您参考，希望对您学习mysql触发器方面能有所帮助。

示例一
delimiter //
create trigger InsertUser
before insert on user
for each row
Begin
insert into user_group(uid,gid) values(new.uid,'group4444444444');
end;//
delimiter ;

示例二
delimiter //
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;//
delimiter ;

示例三：
delimiter //
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;//
delimiter ;