我的表叫contract,备份表叫contract_deleted.
我想实现在删除contract里的记录时先把此纪录insert到备份表contract_deleted和contract_billing_deleted,下面是我写的触发器,可是有问题,如果把insert into contract_deleted 去掉的话是没问题的,请问是怎么回事?
CREATE OR REPLACE TRIGGER CONTRACT_BEFORE_DELETE before delete
on CONTRACT for each row
begin
insert into contract_deleted
(select CONTRACT_NUM, CUSTNAME, COMPANY_NAME, LOCATION, PROJECT_NAME, START_DATE, END_DATE, TERMINATION_DATE, BILLING_METHOD, BILLING_SCHEDULE, AUTO_RENEW, TCV, ONE_TIME_CHARGE, MONTHLY_CHARGE, CONTRACT_RECEIVED_DATE, REMARKS, CONTRACT_STATUS from contract where contract_num = :old.contract_num);
insert into contract_billing_deleted
(select contract_num, billing_date, bill_ref_num, amount, remarks from contract_billing where contract_num = :old.contract_num);
end;
/
------解决方案--------------------
很可能是表结构不相同
------解决方案--------------------
before delete
修改为after delete 试试？
------解决方案--------------------
加commit;试试
------解决方案--------------------
语法结构好象有问题啊
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不能这样写的 在触发器里面select 本表有问题的 你试试这个
CREATE OR REPLACE TRIGGER CONTRACT_BEFORE_DELETE before delete
on CONTRACT for each row
begin
insert into contract_deleted
(select CONTRACT_NUM, CUSTNAME, COMPANY_NAME, LOCATION, PROJECT_NAME, START_DATE, END_DATE, TERMINATION_DATE, BILLING_METHOD, BILLING_SCHEDULE, AUTO_RENEW, TCV, ONE_TIME_CHARGE, MONTHLY_CHARGE, CONTRACT_RECEIVED_DATE, REMARKS, CONTRACT_STATUS from contract where contract_num = :old.contract_num);
insert into contract_billing_deleted values
(:old.contract_num, :old.billing_date, :old.bill_ref_num, :old.amount, :old.remarks );
end;
------解决方案--------------------
这是行触发器，这样不行的
------解决方案--------------------
触发器不能使用本表，所以你的触发器不能通过编译。
------解决方案--------------------
insert into contract_deleted (:old.对应的字段);
insert into contract_billing_deleted values
(:old.contract_num, :old.billing_date, :old.bill_ref_num, :old.amount, :old.remarks );
------解决方案--------------------