Sql server 空列上的SQL分组依据

我有一个包含以下部分的查询：

    UNION ALL

------------------------ Stock from last monday ---------------------------
SELECT

 [Local SKU code] as [Item No_]
,0 as [qty forecast]
,0 as [qty sold]
,0 as [qty sold py]
,sum(Quantity) as [Stock from last monday]
,0 as [actual production (kg)]
,0 as [actual production (pcs)]
,'' as [Customer Group]
,navision
,year(rep_date) as 'year'
,month(rep_date) as 'month'
,Datepart(iso_week,rep_date) as 'week'
,0 as [Bill-to Customer No_]

FROM dw_current_stock_mon as curr_stock

group by 
 [Local SKU code]
--here i would need curr_stock.[Customer Group]
,navision
,year(curr_stock.rep_date)
,month(curr_stock.rep_date)
,Datepart(iso_week,curr_stock.rep_date)

我的问题是如何将curr_stock.[Customer Group]包含在Group by子句中？它不在原始表中，它只是在select子句中创建的。 它是必需的，因为我想使用UNIONALL，并且我的所有其他表都有这个列。 或者有没有其他办法来解决这个问题

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谢谢

谢谢！这很好用，但我怎么能把它用在联合体中呢？我没有问题。请您提供更多的细节。顺便说一句，你可以在cte中使用union all。好的，我现在解决了所有问题。你的答案是关键！再次感谢！

with cte as (SELECT
 [Local SKU code] as [Item No_]
,0 as [qty forecast]
,0 as [qty sold]
,0 as [qty sold py]
,sum(Quantity) as [Stock from last monday]
,0 as [actual production (kg)]
,0 as [actual production (pcs)]
,'' as [Customer Group]
,navision
,year(rep_date) as 'year'
,month(rep_date) as 'month'
,Datepart(iso_week,rep_date) as 'week'
,0 as [Bill-to Customer No_]

FROM dw_current_stock_mon as curr_stock)
    select --new field names
from cte
group by --new fields name