Question

Possible Duplicate:
How to group by the each week upto last six week sundays dates in sql?

I need to take the count of weekno. It works fine but i don’t know the weekno that is [34],[35],[36],[37],[38],[39]. The weekno knows only on the runtime.For example in a year it contains totally 52 weeks. I got this query from the help of @Bluefeet, he posted the query on the same stackoverflow. If i change the from date and to date in the between field it doesn’t work. Because i hard coded the weekno in the below query. Please give me the solution whatever the date in the between field within the year.

SET DATEFIRST 1 
SELECT case when InstanceType is not null then InstanceType else 'Sum' End InstanceType ,  
  sum([34]) AS FirstWeek, 
  sum([35]) AS SecondWeek, 
  sum([36]) AS ThirdWeek, 
  sum([37]) AS FourthWeek, 
  sum([38]) AS FifthWeek, 
  sum([39]) AS SixthWeek,  
  max(InstanceDescription) AS InstanceDescription 
FROM 
( 
  SELECT [SPGI01_INSTANCE_TYPE_C] AS InstanceType, 
    [34], [35], [36], [37], [38], [39], InstanceDescription  
  FROM 
  ( 
    SELECT I01.[SPGI01_INSTANCE_TYPE_C], 
      DatePart(wk, I01.[SPGI01_CREATE_S]) WeekNo, 
      DATEADD(DAY, 7 -DATEPART(WEEKDAY,I01.[SPGI01_CREATE_S]),  I01.[SPGI01_CREATE_S]) WeekEnd, 
      J03.SPGJ03_MSG_TRANSLN_X InstanceDescription  
    FROM [SUPER-G].[dbo].[CSPGI01_ASN_ACCURACY] I01  
    INNER JOIN [SUPER-G].[dbo].[CSPGI50_VALID_INSTANCE_TYPE] I50 
      ON I50.[SPGI50_INSTANCE_TYPE_C] = I01.[SPGI01_INSTANCE_TYPE_C]  
    LEFT JOIN CSPGJ02_MSG_OBJ J02 
      ON I50.SPGJ02_MSG_K = J02.SPGJ02_MSG_K  
    LEFT JOIN CSPGJ03_MSG_TRANSLN J03 
      ON J02.SPGJ02_MSG_K = J03.SPGJ02_MSG_K  
    where I50.[SPGA04_RATING_ELEMENT_D] = 1  
      and I01.[SPGI01_EXCEPTIONED_F] = 'N' 
      and I01.[SPGI01_DISPUTED_F] != 'Y'  
      AND J03.[SPGJ03_LOCALE_C] =  'en_US'  
      and I01.[SPGA02_BUSINESS_TYPE_C] = 'PROD'  
      and I01.[SPGA03_REGION_C] = 'EU'  
      and I01.[SPGI01_SUB_BUSINESS_TYPE_C] = 'PRD'  
      and I01.[SPGI01_CREATE_S] between '10-08-2012 00:00:00.000' AND '11-18-2012 23:59:59.000'  
  ) x 
  pivot 
  ( 
    count(WeekEnd) 
    FOR weekno IN ([34], [35], [36], [37], [38], [39])  
  ) p 
) x1 
GROUP BY  InstanceType WITH ROLLUP 

Answer 1

If you are looking to be able to pass in any date values to get the data that meets your criteria, then for this type of PIVOT you will need to use a dynamic SQL solution similar to this:

DECLARE @cols AS NVARCHAR(MAX),
    @colsRollup AS NVARCHAR(MAX),
    @query  AS NVARCHAR(MAX),
    @StartDate DateTime,
    @EndDate DateTime

Set @StartDate = '10-08-2012 00:00:00.000'
Set @EndDate = '11-18-2012 23:59:59.000'

select @cols = STUFF((SELECT ',' + QUOTENAME(WeekEnd) 
                    from
                    (
                      select DatePart(wk, I01.[SPGI01_CREATE_S]) WeekEnd
                      from [SUPER-G].[dbo].[CSPGI01_ASN_ACCURACY]
                      where I01.[SPGI01_CREATE_S] between @StartDate AND @EndDate
                    ) src
                    group by WeekEnd
                    order by WeekEnd desc
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

select @colsRollup = STUFF((SELECT ', Sum(' + QUOTENAME(WeekEnd) +') as WeekNo'+Cast(Weekend as varchar(2))
                    from
                    (
                      select DatePart(wk, I01.[SPGI01_CREATE_S]) WeekEnd
                      from [SUPER-G].[dbo].[CSPGI01_ASN_ACCURACY]
                      where I01.[SPGI01_CREATE_S] between @StartDate AND @EndDate
                    ) src
                    group by WeekEnd
                    order by WeekEnd desc
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

set @query = '
             SELECT case when InstanceType is not null then InstanceType else ''Sum'' End InstanceType ,  
                '+@colsRollup+',  max(InstanceDescription) AS InstanceDescription
             FROM
             (
               SELECT SPGI01_INSTANCE_TYPE_C as InstanceType,
                    InstanceDescription, ' + @cols + ' 
               from 
               (
                  SELECT I01.[SPGI01_INSTANCE_TYPE_C], 
                    DatePart(wk, I01.[SPGI01_CREATE_S]) WeekNo, 
                    DATEADD(DAY, 7 -DATEPART(WEEKDAY,I01.[SPGI01_CREATE_S]),  I01.[SPGI01_CREATE_S]) WeekEnd, 
                    J03.SPGJ03_MSG_TRANSLN_X InstanceDescription  
                  FROM [SUPER-G].[dbo].[CSPGI01_ASN_ACCURACY] I01  
                  INNER JOIN [SUPER-G].[dbo].[CSPGI50_VALID_INSTANCE_TYPE] I50 
                    ON I50.[SPGI50_INSTANCE_TYPE_C] = I01.[SPGI01_INSTANCE_TYPE_C]  
                  LEFT JOIN CSPGJ02_MSG_OBJ J02 
                    ON I50.SPGJ02_MSG_K = J02.SPGJ02_MSG_K  
                  LEFT JOIN CSPGJ03_MSG_TRANSLN J03 
                    ON J02.SPGJ02_MSG_K = J03.SPGJ02_MSG_K  
                  where I50.[SPGA04_RATING_ELEMENT_D] = 1  
                    and I01.[SPGI01_EXCEPTIONED_F] = ''N'' 
                    and I01.[SPGI01_DISPUTED_F] != ''Y''  
                    AND J03.[SPGJ03_LOCALE_C] =  ''en_US''  
                    and I01.[SPGA02_BUSINESS_TYPE_C] = ''PROD'' 
                    and I01.[SPGA03_REGION_C] = ''EU''  
                    and I01.[SPGI01_SUB_BUSINESS_TYPE_C] = ''PRD''
                    and I01.[SPGI01_CREATE_S] between '+ convert(varchar(10), @StartDate, 120)+' AND '+ convert(varchar(10), @EndDate, 120)+'
              ) x
              pivot 
              (
                  count(WeekEnd)
                  for weekno in (' + @cols + ')
              ) p 
             ) x1
             GROUP BY InstanceType WITH ROLLUP '

execute(@query)

Note: this is untested since I do not have any sample data, etc.