PivotSQL_SelectOnly

PivotSql_selectonly.sql

/* SETUP */
Declare @ProductInfo Table
(
ProductName varchar(10),
DateOfSale datetime,
SaleValue int
);

Insert Into @ProductInfo
Values ('a','2011-05-14',2),
		('b','2011-05-14',4),
		('c','2011-05-17',3),
		('a','2011-05-19',6),
		('a','2011-05-24',4),
		('a','2011-05-25',7),
		('a','2011-05-29',6);
/* SETUP */


Declare @StartDate datetime, @EndDate DateTime

Set @StartDate = '2011-05-01'
Set @EndDate = '2011-06-30'

Select  ProductName,
        IsNull([1],0) as 'Week 1',
        IsNull([2],0) as 'Week 2',
        IsNull([3],0) as 'Week 3',
        IsNull([4],0) as 'Week 4',
        IsNull([5], 0) as 'Week 5',
        IsNull([6], 0) as 'Week 6',
        IsNull([7], 0) as 'Week 7',
        IsNull([8], 0) as 'Week 8',
        IsNull([9], 0) as 'Week 9'

From 
(
Select  ProductName,
        DATEDIFF(week, DATEADD(MONTH, DATEDIFF(MONTH, 0, DateOfSale), 0), DateOfSale) +1 as [Weeks],
        SaleValue

From @ProductInfo
-- Only get rows where the date is the same as the DatePeriod
-- i.e DatePeriod is 30th May 2011 then only the weeks of May will be calculated
Where DateOfSale >= @StartDate
And DateOfSale <= @EndDate
)p 
Pivot (Sum(SaleValue) for Weeks in ([1],[2],[3],[4],[5],[6],[7],[8],[9])) as pv