如何根据ID合并行并求和特定字段

Question

我正在尝试合并具有相似标识的行。我的桌子看起来像这样：

如果值是来自同一行的另一行中的'0.00'，我想填写“借方”或“贷方”，然后执行Debit - Credit计算，如下所示：

+------------+----------+---------+----------+----------+-------+
|Source      | Property | ID      | Debit    | Credit   |Balance|
+------------+----------+---------+----------+----------+-------+
|HOCV1900091 | PROP0003 | 1.01.86 | 16800.00 | 16800.00 | 0.00  |
+------------+----------+---------+----------+----------+-------+    

如何？

我做到了：

SELECT 
    a.[Date],
    a.[Source],
    a.[Property],
    a.[ID],
    [Debit] = STUFF((SELECT DISTINCT  Debit FROM #ProcSubLegder b WHERE b.Source = a.Source FOR XML PATH('')),1,2,''),
    [Credit] = STUFF((SELECT DISTINCT  Credit FROM #ProcSubLegder b WHERE b.Source = a.Source FOR XML PATH('')),1,2,''),
    a.[Balance]
FROM #ProcSubLegder a
GROUP BY [Date],[Source],[Property],[ID],[Credit],[Balance]

但这给了我一个非常糟糕的结果。

Answer 1

您应该仅按来源和属性进行汇总：

SELECT
    Source,
    Property,
    MAX(CASE WHEN ID LIKE '%[0-9].[0-9]%' THEN ID END) AS ID,
    MAX(Debit) AS Debit,
    MAX(Credit) AS Credit,
    MAX(Credit) - MAX(Debit) AS Balance
FROM #ProcSubLegder
GROUP BY
    Source,
    Property;

注意：此答案假定每个源/属性组最多具有两个记录的交易价值。如果没有，则上述答案必须更改，您应该显示实际数据。