mysql触发器

Posted 2020-10-21 orna

1.创建触发器

create trigger trigger_name trigger_time  trigger_event on table_name for each row

begin

trigger_stmt

end

• trigger_time:before或者是after
• trigger_event:insert、update和delete

use oa;

--create table trigg select * from students where 1=2;
delimiter //
create trigger cus_trigger before insert on students for each row
begin
insert into trigg values(new.id,new.tname);
end //
delimiter ;

insert into students (tname)values(‘hehe‘);

　　

2.删除触发器

drop trigger trigger_name;