SQL Server迭代求和

drop table t_geovindu 

create table t_geovindu
(
    xid int IDENTITY (1, 1),
    price money,
    DebitCredit VARCHAR(2),
    adate datetime default(getdate()) 

) 

insert into t_geovindu(DebitCredit,price) values('C',10)
insert into t_geovindu(DebitCredit,price) values('C',25)
insert into t_geovindu(DebitCredit,price) values('C',36)
insert into t_geovindu(DebitCredit,price) values('C',66)
insert into t_geovindu(DebitCredit,price) values('D',-11)
insert into t_geovindu(DebitCredit,price) values('C',32)
insert into t_geovindu(DebitCredit,price) values('D',-50) 

--
select a.xid, a.price,
 (select sum(price) from t_geovindu b where b.xid <= a.xid) as Balance,DebitCredit
from t_geovindu a 

--
select xid, price,
 (case  when Balance  is null then price else Balance  end ) as Balance
from
 (select a.xid, (select  sum(price) from t_geovindu b where b.xid < a.xid)  as Balance  , a.price
from t_geovindu a)  x
-- 

select  sum(price) from t_geovindu b where (b.xid < a.xid) 

select a.xid, (select  sum(price) from t_geovindu b where b.xid < a.xid)  as Balance  , a.price
from t_geovindu a 

---
create function mysum(@xh int, @price int) returns int
begin
   return (select
           (case when Balance  is null then @price  else Balance  end) as Balance
          from ( select  sum(price) as Balance  from t_geovindu where xid < @xh) x)
end
---
select xid, price, dbo.mysum(xid, price)  as Balance
from t_geovindu 

create table vipnoDly
(
    VID Int IDENTITY (1, 1) PRIMARY KEY, invoiceno nvarchar(50),indate datetime, vipno nvarchar(50),amount int,dcr nvarchar(20)
)
go 

SET IDENTITY_INSERT [dbo].vipnoDly ON
Insert vipnoDly(invoiceno,indate,vipno,amount,dcr) Select invoiceno,indate,vipno,amount,dcr From vipdly AS A Where vipno='654321' order by A.indate 

select * from vipnoDly 

--SET IDENTITY_INSERT dbo.Tool ON 

Create Function [dbo].[GetVipNoDlyList]
(
    @ID nvarchar(20)
)
Returns @Tree Table (VID Int IDENTITY (1, 1), invoiceno nvarchar(50),indate datetime, vipno nvarchar(50),amount int,dcr nvarchar(20))
As
Begin
Insert @Tree(invoiceno,indate,vipno,amount,dcr) Select invoiceno,indate,vipno,amount,dcr From vipdly AS A Where vipno=@ID order by A.indate
Return
End
GO 

select * from [dbo].[GetVipNoDlyList] ('geovindu') as a order by indate 

---SQL Server聚合函数和子查询迭代求和
---如果ID不是第一條記錄，會出現第一行統計合計有問題，所以需查詢生成一個新的ID增長記錄
select a.VID, a.amount,
 (select sum(amount) from [dbo].[GetVipNoDlyList] ('geovindu') b where b.VID <= a.VID) as Balance
from [dbo].[GetVipNoDlyList] ('geovindu') a