Sql 此查询中的总数而不是计数

我有一个工作问题，个人帮助我工作。它给出了0-30天、31-60天等的订单总数。我现在被要求用这些订单的总数替换这个数字。我不确定求和行的语法。我不能100%确定我可以使用此查询合计订单

SELECT DISTINCT 

bh.Customer_Name AS Customer_Name,
ad.Email_Address,
SUM(CASE WHEN CA1.Time = '0 - 30' THEN 1 ELSE 0 END) AS "0_30",
SUM(CASE WHEN CA1.Time = '31 - 60' THEN 1 ELSE 0 END) AS "31_60",
SUM(CASE WHEN CA1.Time = '61 - 90' THEN 1 ELSE 0 END) AS "61_90",
SUM(CASE WHEN CA1.Time = '90+' THEN 1 ELSE 0 END) AS "90+"

FROM

dbo.Billing_Detail bd LEFT OUTER JOIN
dbo.Billing_Header bh ON bd.Billing_Header_ID = bh.Billing_Header_ID LEFT OUTER JOIN
dbo.Commission_Distribution cd ON bh.Billing_Header_ID = cd.Billing_Header_ID LEFT OUTER JOIN
dbo.Salesman_Code sc ON cd.Salesman_Code = sc.Salesman_Code LEFT OUTER JOIN
dbo.Address ad ON bh.Billing_Header_ID = ad.Billing_Header_ID 

CROSS APPLY (
    SELECT 
    CASE WHEN ((DATEDIFF(dd,GETDATE(),bh.Invoice_Date)*-1) <= '30') 
    THEN '0 - 30'
    WHEN '30' < (DATEDIFF(dd,GETDATE(),bh.Invoice_Date)*-1) AND (DATEDIFF(dd,GETDATE(),bh.Invoice_Date)*-1) <= '60'
    THEN '31 - 60'
   WHEN '61' < (DATEDIFF(dd,GETDATE(),bh.Invoice_Date)*-1) AND (DATEDIFF(dd,GETDATE(),bh.Invoice_Date)*-1) <= '90'
    THEN '61 - 90'    
  ELSE '90+'
    END AS Time
 ) AS CA1 

WHERE
bd.Product_Code  NOT LIKE  '%PROCESS%' AND
bd.Product_Code  NOT LIKE  '%DEPOSIT%' AND
DATEDIFF(dd,GETDATE(),bh.Invoice_Date)  <=  -30 AND
bh.Balance_Due  >  '0' AND
bd.Company_Code  =  'AIN' AND
bh.Invoice_Number  NOT LIKE  '%-%' AND
bd.Unit_Price  >  '0' AND
ad.Address_Type  IN  ( '' , 'BILLING' ) 

GROUP by bh.Customer_Name, ad.Email_Address 

选择DISTINCT
bh.客户名称作为客户名称，
广告电子邮件地址，
求和（当CA1.Time='0-30'时，则为1，否则为0结束）为“0_30”，
求和（当CA1.Time='31-60'时，则为1，否则为0结束）为“31_60”，
求和（当CA1.Time='61-90'然后1或0结束时的情况）为“61_90”，
求和（当CA1.Time='90+'然后1或0结束时的情况）为“90+”
从…起
dbo.u详细信息bd左外连接
bd.Billing\u Header上的dbo.Billing\u Header\u ID=bh.Billing\u Header\u ID左外部联接
bh.Billing\u Header\u ID=cd.Billing\u Header\u ID左侧外部联接上的dbo.Commission\u分发cd
dbo.saller\u代码cd上的sc.saller\u代码=sc.saller\u代码左外连接
bh.Billing\u Header\u ID=ad.Billing\u Header\u ID上的dbo.Address广告
交叉应用(
挑选
CASE WHEN（（DATEDIFF（dd，GETDATE（），bh.Invoice_Date）*-1）在您的每一笔金额中，您有一个CASE语句，如果一行满足一个条件（即，如果它对应于所需时间范围内的订单），则为1，否则为0。所有1的总和是行数（订单）满足条件的。现在，您不需要为满足条件的每行添加1（相当于计算有问题的行），而是要添加其各自的金额（相当于计算有问题的行的总金额）。因此，您可以使用相同的代码，只需用以下代码替换总和：

SUM(CASE WHEN CA1.Time = '0 - 30' THEN CA1.Amount ELSE 0 END) AS "0_30",
SUM(CASE WHEN CA1.Time = '31 - 60' THEN CA1.Amount ELSE 0 END) AS "31_60",
SUM(CASE WHEN CA1.Time = '61 - 90' THEN CA1.Amount ELSE 0 END) AS "61_90",
SUM(CASE WHEN CA1.Time = '90+' THEN CA1.Amount ELSE 0 END) AS "90+"

唐恩恩，非常感谢你的帮助和解释。这真的很有帮助，我现在可以拿着这个，看看我是否可以在其他地方使用它，现在我知道它在做什么了。再次感谢。