Question

I am working in SQL Server 2008. I am writing a stored procedure which aggregates data on a weekly basis.

Code for aggregation is

ALTER PROCEDURE [dbo].[ups_URLBatchStats] 
   (@startDate datetime, @endDate datetime,@source varchar(8))
AS BEGIN
    SELECT 
       DATEADD(wk, DATEDIFF(wk, 0, ScheduleDate), 6) AS [Week Commencing], 
       SUM(Unresolved) AS Unresolved,
       SUM(Resolved) AS Resolved,
       SUM(TurkSpend) AS TurkSpend
    FROM 
       dbo.V_URLBatchStats 
    WHERE
       ScheduleDate BETWEEN @startDate AND @endDate 
       AND Source = ISNULL(@source, Source)
    GROUP BY
       DATEADD(wk, DATEDIFF(wk, 0, ScheduleDate), 6)
    ORDER BY 
       DATEADD(wk, DATEDIFF(wk, 0, ScheduleDate), 6)
END

Show it gives me correct result, but if there are no data for any week I have to show it with values of ‘0’ in the columns.

So how can I handled these skipped weekly rows?

Thanks in advance.

Answer 1

It seems like you are currently selecting the wrong week, I tried to fix this:

SELECT dateadd(wk, number, DATEADD(wk, DATEDIFF(wk, 0, @startdate)-1, 6)) AS [Week Commencing], 
coalesce(SUM(Unresolved), 0) AS Unresolved,
coalesce(sum(Resolved), 0)as Resolved,
coalesce(sum(TurkSpend), 0) as TurkSpend
FROM dbo.V_URLBatchStats 
right join
master..spt_values 
on ScheduleDate between @startDate and @endDate and Source=ISNULL(@source,Source)
where type = 'P' and dateadd(wk, number, DATEADD(wk, DATEDIFF(wk, 0, @startdate)-1, 6)) <= @enddate
GROUP BY dateadd(wk, number, DATEADD(wk, DATEDIFF(wk, 0, @startdate)-1, 6))
ORDER BY dateadd(wk, number, DATEADD(wk, DATEDIFF(wk, 0, @startdate)-1, 6))