sql计算有关问题

sql计算问题
写了一个存储过程，其中包含除法计算，但是有一个除数为0，这是因为数据录入的时候有问题是否会造成我查出的数据不显示
代码中Fweight 为0

SQL code

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go

ALTER proc [dbo].[Pd_TB_Profit_CP]
(@FDateB datetime,@ssql varchar(8000))
as
set nocount on 
SET ANSI_WARNINGS OFF
select t1.FItemName,sum(t1.FQty) FQty,sum(t1.FDAmount) FDAmount,sum(isnull(t1.Fcost,0)) Fcost,sum(isnull(t2.FDDHLFee,0)*(isnull(t1.FDWeight/t2.FWeight,0))) FDDHLFee,
sum(isnull(t2.FDHLFee*(t1.FDWeight/t2.FWeight),0)) FDHLFee,
sum(isnull(t1.FDAmount,0)+(isnull(t2.FDDHLFee,0)*(t1.FDWeight/t2.FWeight))-(isnull(t1.Fcost,0)+(isnull(t2.FDHLFee,0)*(t1.FDWeight/t2.FWeight)))) FZprofit,
sum(isnull(t1.FDAmount,0)+(isnull(t2.FDDHLFee,0)*(t1.FDWeight/t2.FWeight))-(isnull(t1.Fcost,0)+(isnull(t2.FDHLFee,0)*(t1.FDWeight/t2.FWeight))))/count(distinct t1.fid) FDprofit
from SU_Sale_TBStockBillEntry t1 
inner join SU_Sale_TBStockBill t2 on t1.fid=t2.fid 
where CONVERT(varchar(6),[FDate],112)=@FdateB GROUP BY t1.FItemName
union all
select '合计', sum(t1.FQty),sum(t1.FDAmount),sum(t1.Fcost),sum(isnull(t2.FDDHLFee,0)*(isnull(t1.FDWeight/t2.FWeight,0))),
sum(isnull(t2.FDHLFee*(t1.FDWeight/t2.FWeight),0)),
sum(isnull(t1.FDAmount,0)+(isnull(t2.FDDHLFee,0)*(t1.FDWeight/t2.FWeight))-(isnull(t1.Fcost,0)+(isnull(t2.FDHLFee,0)*(t1.FDWeight/t2.FWeight)))),
sum(isnull(t1.FDAmount,0)+(isnull(t2.FDDHLFee,0)*(t1.FDWeight/t2.FWeight))-(isnull(t1.Fcost,0)+(isnull(t2.FDHLFee,0)*(t1.FDWeight/t2.FWeight))))/count(distinct t1.fid)
from SU_Sale_TBStockBillEntry t1 
inner join SU_Sale_TBStockBill t2 on t1.fid=t2.fid 
where CONVERT(varchar(6),[FDate],112)=@FdateB

查询结果如图
如果正确的话在合计上面应该还有其他数据的

------解决方案--------------------
传进去的参数查不出来数据，所以就没显示，显示一行是因为union了一行固定的数据

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