子集行具有期初和期末余额

Question

正在使用：SQL Server 2012

我正在尝试在发票（第一至第二至第三...）之间获取使用量，无论其高低。 由于结余余额变为负值，因此前3个交易结余余额设置为0。如果期末余额可用，则仅作为期初余额转移到下一个交易。

请提供所有有价值的建议和支持，以改善查询结果。

我试图获得如下所述的结果（excel格式仅用于说明目的）。

我的结果：

---

DECLARE
@startDate DATETIME,
@endDate DATETIME,
@OpenBalance int

SET @startDate = '09/01/2018'
SET @endDate = '12/30/2018'

; WITH cteDates AS 
 (
  SELECT
   @startDate 'new_date',
   @startDate 'end_date',
   1 as level
  UNION ALL
  SELECT
   DATEADD(DD,1,new_date) 'new_date',
   DATEADD(DD,1,new_date),
   level+1
  FROM cteDates
  WHERE DATEADD(dd,1,new_date) < @endDate
 )
, cteInvoice AS
 (
  SELECT ProductID
  ,InvoiceNo
  ,InvoiceDate
  ,InvoiceQty
  ,LEAD(InvoiceDate) OVER (PARTITION BY ProductID ORDER BY InvoiceDate) AS 
   NextDate
 FROM ##tmpInvoice AS h
 JOIN cteDates ON InvoiceDate BETWEEN cteDates.new_date and 
 cteDates.end_date 
)
, cteUsage AS
 (
  SELECT ProductID, TransactionDate, Quantity
  FROM ##tmpUsage 
  JOIN cteDates ON TransactionDate BETWEEN cteDates.new_date and 
  cteDates.end_date
 )

SELECT cteInvoice.*
 ,o.UsageQty
 ,ROW_NUMBER() OVER (PARTITION BY 
  cteInvoice.ProductID,CteInvoice.InvoiceDate ORDER BY
cteInvoice.InvoiceNo) AS RowNumber 
FROM cteInvoice 
OUTER APPLY (SELECT SUM(Quantity) AS UsageQty  
             FROM cteUsage 
             WHERE (cteInvoice.ProductId = cteUsage.ProductID) 
              AND (TransactionDate >= cteInvoice.InvoiceDate 
              AND  TransactionDate < cteInvoice.NextDate)
             GROUP BY cteUsage.ProductID) AS o 
OPTION (MAXRECURSION 0); GO