SQL Server Dynamic Pivot Query - sql-server

Question

I am creating a dynamic pivot query that shows the total NetAmount per Week of every Customers within a given date range. The problem is it doesn't ADD ALL the NetAmount within the Week. Here are the data of tblSampleSalesInvoices:
Here is my script.
CREATE PROCEDURE uspSalesWeeklySummary
(
#CustomerId INT,
#FromDate DATETIME,
#ToDate DATETIME
)
AS
SET NOCOUNT ON
DECLARE #Query AS VARCHAR(MAX)
DECLARE #DateStart DATETIME = #FromDate
DECLARE #tmp TABLE ([Date] VARCHAR(MAX))
DECLARE #Month VARCHAR(MAX)
DECLARE #Day VARCHAR(MAX)
DECLARE #ColumnHeader VARCHAR(MAX)
DECLARE #Headers VARCHAR(MAX)
WHILE DATEADD(WEEK, DATEDIFF(WEEK, '19050101', #DateStart), '19050101') <= DATEADD(WEEK, DATEDIFF(WEEK, '19050101', #ToDate), '19050101')
BEGIN
SET #month = DATENAME(Month, DATEADD(WEEK, DATEDIFF(WEEK, '19050101', #DateStart), '19050101'))
SET #day = CAST( DATEPART(DD, DATEADD(WEEK, DATEDIFF(WEEK, '19050101', #DateStart), '19050101')) AS VARCHAR(MAX) )
SET #ColumnHeader = 'Week ' + CAST(DatePart(WEEK,#DateStart) AS VARCHAR(MAX)) + ' - ' + CAST(Year(DATEADD(WEEK, DATEDIFF(WEEK, '19050101', #DateStart), '19050101')) AS VARCHAR(MAX)) + ' - ' + #month + ' - ' + #day
INSERT INTO #tmp ([Date])
VALUES (#ColumnHeader)
SET #DateStart = DATEADD(DD, 7, #DateStart)
END
SELECT #Headers = ISNULL(#Headers + ',','') + QUOTENAME(t.[Date])
FROM #tmp t
SET #Headers = #Headers + ',[Grand Total]'
SET #Query =
'
DECLARE #CustomerId INT = ' + CAST(#CustomerId AS VARCHAR) + '
DECLARE #FromDate DATETIME = CAST(''' + CAST(#FromDate AS VARCHAR) + ''' AS DATETIME)
DECLARE #ToDate DATETIME = CAST(''' + CAST(#ToDate AS VARCHAR) + ''' AS DATETIME)
DECLARE #Headers VARCHAR(MAX) = ''' + CAST(#Headers AS VARCHAR(MAX)) + '''
SELECT *
FROM
(
SELECT c.CustomerName AS CustomerName,
''Week '' + CAST(DatePart(WEEK,si.TransactionDate) AS VARCHAR(MAX)) + '' - ''
+ CAST(Year(DATEADD(WEEK, DATEDIFF(WEEK, ''19050101'', si.TransactionDate), ''19050101'')) AS VARCHAR(MAX)) + '' - ''
+ CAST(DATENAME(Month, DATEADD(WEEK, DATEDIFF(WEEK, ''19050101'', si.TransactionDate), ''19050101'')) AS VARCHAR(MAX)) + '' - ''
+ CAST(DATEPART(DD, DATEADD(WEEK, DATEDIFF(WEEK, ''19050101'', si.TransactionDate), ''19050101'')) AS VARCHAR(MAX)) AS Header,
SUM(si.NetAmount) AS NetAmount
FROM tblSampleSalesInvoices si
LEFT OUTER JOIN tblSampleCustomers c ON c.Id = si.CustomerId
WHERE (si.TransactionDate BETWEEN #FromDate AND DATEADD(WEEK, DATEDIFF(WEEK, ''19050101'', DATEADD(DD, 7 , #ToDate)), ''19050101''))
AND (si.CustomerId = #CustomerId OR #CustomerId = 0)
GROUP BY c.CustomerName, si.TransactionDate
UNION ALL
SELECT c.CustomerName AS CustomerName,
''Grand Total'' AS Header,
SUM(si.NetAmount) AS NetAmount
FROM tblSampleSalesInvoices si
LEFT OUTER JOIN tblSampleCustomers c ON c.Id = si.CustomerId
WHERE (si.TransactionDate BETWEEN #FromDate AND DATEADD(WEEK, DATEDIFF(WEEK, ''19050101'', DATEADD(DD, 7 , #ToDate)), ''19050101''))
AND (si.CustomerId = #CustomerId OR #CustomerId = 0)
GROUP BY c.CustomerName
) AS BaseData
PIVOT
(
SUM(NetAmount)
FOR Header IN (' + #Headers + ')
) AS Pivoting'
EXEC (#Query)
GO
EXEC uspSalesWeeklySummary 0,'01/01/2016','02/01/2016'
In this script the SUM of NetAmount will be 10000 only because From the Day of Jan 1, 2016 until Feb 1,2016 only 1 transaction (TR0002) has been made. But when I place Dec 27,2015 and Feb 1,2016 in the parameters. It shows only the NetAmount of TR0001 instead of 25000 which the SUM of TR0001 and TR0002.

Answer 1

If you are looking for week numbers relative to a start date and can create # tables then this might suit
CREATE PROCEDURE uspSalesWeeklySummary
(
#CustomerId INT,
#FromDate DATETIME,
#ToDate DATETIME
)
AS
SET NOCOUNT ON
set datefirst 1
/*
create table tblSampleSalesInvoices (id int,transactionNo int,customerid int,TransactionDate date,netamount int)
insert into tblSampleSalesInvoices values
(1,1,1,'2015-12-29',15000),
(2,2,1,'2016-01-01',15000),
(3,3,2,'2016-03-01',15000),
(4,4,3,'2016-04-01',15000),
(5,5,4,'2016-06-01',15000),
(6,6,1,'2016-09-01',15000),
(7,7,2,'2016-10-01',15000),
(8,8,3,'2016-12-01',15000),
(9,9,4,'2017-01-01',15000),
(10,10,1,'2017-04-01',15000),
(11,11,2,'2017-07-01',15000),
(12,12,3,'2017-10-01',15000),
(13,13,4,'2017-12-01',15000)
*/
--declare #CustomerId INT = 1
--declare #FromDate DATETIME = '2015-12-27'
--declare #ToDate DATETIME = '2016-02-01'
DECLARE #Query AS VARCHAR(MAX)
DECLARE #DateStart DATETIME = #FromDate
IF OBJECT_ID(N'tempdb..#Tempdates') IS NOT NULL
BEGIN
DROP TABLE #Tempdates
END
declare #id int = 0
create table #tempdates (id int,[lodate] date, [hidate] date ,yyyy varchar(4), mm varchar(max), dd int,txt varchar(max))
DECLARE #Month VARCHAR(MAX)
DECLARE #Day VARCHAR(MAX)
DECLARE #ColumnHeader VARCHAR(MAX)
DECLARE #Headers VARCHAR(MAX)
WHILE DATEADD(WEEK, DATEDIFF(WEEK, '19050101', #DateStart), '19050101') <= DATEADD(WEEK, DATEDIFF(WEEK, '19050101', #ToDate), '19050101')
BEGIN
set datefirst 1
SET #month = DATENAME(Month, DATEADD(WEEK, DATEDIFF(WEEK, '19050101', #DateStart), '19050101'))
SET #day = CAST( DATEPART(DD, DATEADD(WEEK, DATEDIFF(WEEK, '19050101', #DateStart), '19050101')) AS VARCHAR(MAX) )
SET #ColumnHeader = 'Week ' + CAST(DatePart(WEEK,#DateStart) AS VARCHAR(MAX)) + ' - ' +
CAST(Year(DATEADD(WEEK, DATEDIFF(WEEK, '19050101', #DateStart), '19050101')) AS VARCHAR(MAX)) + ' - ' + #month + ' - ' + #day
set #id = #id + 1
insert into #tempdates (id,[lodate],[hidate],yyyy,mm,dd,txt)
values (#id,#datestart,dateadd(dd,6,#datestart),
year(#datestart),
datename(month,#datestart),day(#datestart),
'Week ' + cast(#id as varchar(2)) + ' - ' + cast(datename(month,#datestart) as varchar(max)) + ' - ' + cast(day(#datestart) as varchar(max))
)
SET #DateStart = DATEADD(DD, 7, #DateStart)
END
update #tempdates
set hidate = #todate where id = #id
SELECT #Headers = ISNULL(#Headers + ',','') + QUOTENAME(t.[txt])
FROM #tempdates t
SET #Headers = #Headers + ',[Grand Total]'
--select #headers headers
--select * from #tempdates
set #query =
'
DECLARE #CustomerId INT = ' + CAST(#CustomerId AS VARCHAR) + '
DECLARE #FromDate DATETIME = CAST(''' + CAST(#FromDate AS VARCHAR) + ''' AS DATETIME)
DECLARE #ToDate DATETIME = CAST(''' + CAST(#ToDate AS VARCHAR) + ''' AS DATETIME)
DECLARE #Headers VARCHAR(MAX) = ''' + CAST(#Headers AS VARCHAR(MAX)) + '''
SELECT *
FROM
(
SELECT si.customerid,
t.txt as header,
SUM(si.NetAmount) AS NetAmount
FROM tblsamplesalesinvoices si
left join #tempdates t on si.Transactiondate between lodate and hidate
--LEFT OUTER JOIN tblSampleCustomers c ON c.Id = si.CustomerId
WHERE si.TransactionDate BETWEEN #FromDate AND DATEADD(WEEK, DATEDIFF(WEEK, ''19050101'', DATEADD(DD, 7 , #ToDate)), ''19050101'')
AND (si.CustomerId = #CustomerId OR #CustomerId = 0)
GROUP BY -- c.CustomerName,
si.customerid
,
t.txt
UNION ALL
SELECT si.CustomerId,
''Grand Total'' AS Header,
SUM(si.NetAmount) AS NetAmount
FROM tblsamplesalesinvoices si
-- LEFT OUTER JOIN tblSampleCustomers c ON c.Id = si.CustomerId
WHERE (si.TransactionDate BETWEEN #FromDate AND DATEADD(WEEK, DATEDIFF(WEEK, ''19050101'', DATEADD(DD, 7 , #ToDate)), ''19050101''))
AND (si.CustomerId = #CustomerId OR #CustomerId = 0)
GROUP BY si.customerid
) s
PIVOT
(
SUM(NetAmount)
FOR Header IN (' + #Headers + ')
) AS Pivoting'
--select #query
exec (#query)
IF OBJECT_ID(N'tempdb..#Tempdates') IS NOT NULL
BEGIN
DROP TABLE #Tempdates
END
go
Please note dates are UK localised