CTE和滞后查询

Question

我正在尝试获得一个正在运行的演绎总数，但是当我有一个零行时会出现问题。我正在使用SQL Server 2012。

这是我当前的一批结果。

SuppressionDescription  SuppressionPriority SuppressionPriorityOrder    TotalRecords    RecordsLost RunningTotal
Deceased_Bln    1   1   1376    2   1374
Pivotal Postcode Exclusions 9   2   1376    0   1374
Pivotal 3 Month Decline 11  3   1376    24  1352
Postcode exclusions (Complaints)    12  4   1376    0   1352
Gone Away (from Barcode on returned mail)   15  5   1376    30  1346
Pivotal prospects  with a Do Not Mail flag  16  6   1376    234 1112
Email Suppression File  17  7   1376    7   1135
Opt outs & undeliverables from SMS system   18  8   1376    7   1362
Generic Phone Number Suppression    19  9   1376    245 1124
Exclude if not MR, MRS, MISS, MS, NULL  23  10  1376    0   1131
Total Prospects 9999    11  1376    0   1376

使用我的查询，前两行计算。共有1,376个减少2个叶子1,374，第二行没有RecordsLost，因此RunningTotal保持不变。到目前为止一切都很好。

但是因为第2行的计数为0，所以第3行（虽然它的RecordsLost为24）不同步。

我尝试添加各种case语句，尝试获取不同场景的总数，但它从来都不行。

以下是我的发言：

;WITH CTE AS (SELECT        ID, SuppressionTypeID, ContactMethodType, SupplierName, SuppressionDescription
                    ,           SuppressionCount, TotalRecords, RecordsLost, SuppressionPriority, SuppressionPriorityOrder  
                    ,           CASE WHEN SuppressionPriority = 9999
                                    THEN TotalRecords
                                    ELSE TotalRecords - RecordsLost END AS RowDiff  
                    ,           CASE WHEN RecordsLost = 0
                                    THEN LAG(RecordsLost, 1) OVER (PARTITION BY SupplierName, ContactMethodType ORDER BY SuppressionPriorityOrder) 
                                    ELSE RecordsLost END AS RecordsLostRoll
                    FROM        #tmpSup 
                    WHERE       SupplierName        = 'Freeman Grattan Holdings'
                    AND         ContactMethodType   = 'A'
                    )
    SELECT      SuppressionTypeID, ContactMethodType, SupplierName, SuppressionDescription
    ,           SuppressionPriority, SuppressionPriorityOrder
    ,           TotalRecords
    ,           RecordsLost
    ,           CASE WHEN SuppressionPriorityOrder = 1
                    THEN RowDiff 
                    ELSE    (LAG(RowDiff, 1, RowDiff)
                                OVER (PARTITION BY SupplierName, ContactMethodType ORDER BY SuppressionPriorityOrder)) - RecordsLost
                    END AS RunningTotal
    FROM        CTE
    ORDER BY    SupplierName
    ,           ContactMethodType
    ,           SuppressionPriority

我想将RunningTotal看作： 1374 1374 1350 1350 1320 1086 1079 1072 827 827 1376（总前景）

任何建议和提前感谢。