This document contains SQL code to normalize billing detail records by month. It declares variables to store IDs, dates and counts. It uses a loop to iterate through billing records, insert normalized records from the start to end date of each record into a table, extending partial months to the end of the month. It then selects fiscal periods between given dates for a client.

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DECLARE @startdate DATETIME
DECLARE @enddate DATETIME
DECLARE @id INT
DECLARE @totalcount INT
DECLARE @StartCounter INT = 1
DECLARE @BillDetailNormalized TABLE
(
ID INT,
StartDate DATETIME,
EndDate DATETIME
)
SELECT @totalcount = MAX(BillDetailID) from TempBillDetail
SET @StartCounter = 1
WHILE (@StartCounter <=@totalcount) --Total Records Loop
BEGIN
SELECT @startdate = StartDate,@enddate = EndDate FROM TempBillDetail WHERE
BillDetailID= @StartCounter
WHILE (DATEPART(MM,@startdate) <= DATEPART(MM,@enddate))-- Start Date and
EndDate Loop
BEGIN
IF (DATEPART(MM,@startdate) = DATEPART(MM,@enddate))
INSERT INTO @BillDetailNormalized VALUES (@StartCounter, @startdate,@enddate)
ELSE IF (DATEPART(MM,@startdate) < DATEPART(MM,@enddate))
INSERT INTO @BillDetailNormalized VALUES (@StartCounter,
@startdate,EOMONTH(@STARTDATE))
SET @startdate = DATEADD(s,-1,DATEADD(mm, DATEDIFF(m,0,@startdate)+1,0)) +1
END
SET @StartCounter = @StartCounter + 1
END
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DECLARE @ServiceBeginKey DATE= '2013-11-01'
DECLARE @ServiceEndKey DATE = '2014-10-31'
SELECT * from ClientFiscalPeriods c WHERE ClientKey = 9
AND (C.FiscalPeriodCalendarEndDateKey >= @ServiceBeginKey)
AND (C.FiscalPeriodCalendarBeginDateKey <= @ServiceEndKey)
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