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  • 触发器 插入删除修改

    建userlogin 表,再建一个一样的表 userlogin_bak,userlogin做删除修改事务时,触发userlogin_bak做相应的事务

    create or replace trigger tr_userlogin after insert or update or delete
    on userlogin for each row
    begin
    if inserting then
    insert into userlogin_bak values(nnnn.nextval,:new.username,encrypt_des(:new.password,'feng111111'));
    elsif updating then
    update userlogin_bak set uno=:new.uno,username=:new.username,password=encrypt_des(:new.password,'feng111111') where uno=:old.uno;
    elsif deleting then
    delete from userlogin_bak where uno=:old.uno;
    end if;
    end;

    /

    insert into userlogin
    values(22,'test122','test22');
    commit;

    update userlogin
    set username='test111'--,password='test222'
    where uno=23;

    delete from userlogin where uno=1111;
    commit;

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  • 原文地址:https://www.cnblogs.com/feng666666/p/5919309.html
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