我有一张表 tblBilling 和 tblTotalFee 。我在 tblBilling 中的一个列被命名为 RemainingAmount ,而在 tblTotalFee 中,我有另一个名为从上个月到期的列 。现在我想要的是,当我在剩余金额中插入一个值时,我希望该值自动插入从上个月到期。我正试图写一个触发器。但我不能正确吗?任何人都可以帮助我吗?
我试过了:
ALTER trigger [dbo].[trg_Billing_TotalFee] on [dbo].[tblBilling]
after insert as
insert into tblTotalFee(DueFromPreviousMonth)
select RemainingAmount from inserted
答案 0 :(得分:1)
举个例子:
create table tblBilling (ID int identity(1000,1) primary key,
RemainingAmount int
)
go
create table tblTotalFee (ID int identity(1000, 1) primary key,
DueFromPreviousMongh int)
go
create trigger tr_tblBillingSync on tblBilling
after insert
as
insert into tblTotalFee (DueFromPreviousMongh)
select RemainingAmount from inserted
go
insert into tblBilling
select 25
union all select 27
union all select 33
go
select * from tblBilling
select * from tblTotalFee
go
最终输出结果:
ID | RemainingAmount
-------------------------
1000 | 25
1001 | 27
1002 | 33
ID | DueFromPreviousMongh
-------------------------
1000 | 25
1001 | 27
1002 | 33