sqlserver在函数中使用临时表

-- 根据大订单号查询已付供应商金额(已付-已退)
ALTER FUNCTION [dbo].[F__SupplierPayOffAmountBOrder]
(
-- Add the parameters for the function here
@BOrderId int
)
RETURNS decimal
AS
BEGIN
declare @payOffAmount decimal
set @payOffAmount=0

declare @SorderIdTemp table(ID int) --定义临时表

insert INTO @SorderIdTemp(ID)
select ID
from TongYe..Borders_Orders_s
where ParentID=@BOrderId and IsValid=1 and OrderStatus<>17

while exists (select ID from @SorderIdTemp)
BEGIN
DECLARE @sid int
select TOP 1 @sid=ID from @SorderIdTemp

set @payOffAmount = @payOffAmount + ISNULL(dbo.F__SupplierPayOffAmount(@sid),0)

delete from @SorderIdTemp where ID=@sid

END

return Isnull( @payOffAmount,0)
END