如何从SQL Server 2014中的另一个总和值中减去Sum值？

Question

我需要从条件'B'之后的字段总和中减去字段的总和

我试过了不同的代码组合来尝试获取我正在查找的内容对于。但我认为最简单的，愚蠢的代码是这一个：

SELECT A.AccountNumber 
     ,SUM(
     (SELECT SUM(FinTransAmt) 
      FROM FinTransMaster 
      WHERE FinTransCode IN ('Code01', 'Code02', 'Code03', 'Code04') 
     ) 
    -  -- Minus sign 
     (SELECT SUM(FinTransAmt) 
      FROM FinTransMaster 
     WHERE FinTransCode IN ('Code05', 'Code06', 'Code07', 'Code08') 
     ) 
    ) AS Interest 

FROM FinTransMaster ft 
    , Account a 

WHERE ft.AcctID=a.AccountId 
    AND a.AccountNumber = '101010101' 
    AND CAST (ft.Created as date) >= '2017-06-01' 
    AND CAST (ft.Created as date) <= '2017-07-01' 

GROUP BY A.AccountNumber 

Answer 1

也许是另一种选择

SELECT A.AccountNumber 
     ,Interest = IsNull(SUM(case when FinTransCode IN ('Code01', 'Code02', 'Code03', 'Code04') then FinTransAmt end),0) 
       - IsNull(SUM(case when FinTransCode IN ('Code05', 'Code06', 'Code07', 'Code08') then FinTransAmt end),0) 
FROM FinTransMaster ft 
    , Account a 
WHERE ft.AcctID=a.AccountId 
    AND a.AccountNumber = '101010101' 
    AND CAST (ft.Created as date) >= '2017-06-01' 
    AND CAST (ft.Created as date) <= '2017-07-01' 
GROUP BY A.AccountNumber 

Answer 2

我想你可以通过使用条件汇总如下使用查询：

SELECT A.AccountNumber 
    ,Sum(case when FinTransCode in ('Code05', 'Code06', 'Code07', 'Code08') then -FinTransAmt else FinTransAmt end) as Interest 
FROM FinTransMaster ft 
    Join Account a 
    On ft.AcctID=a.AccountId 
    AND a.AccountNumber = '101010101' 
    AND CAST (ft.Created as date) >= '2017-06-01' 
    AND CAST (ft.Created as date) <= '2017-07-01' 
GROUP BY A.AccountNumber