枢纽总数每周

Question

我有一个查询，我试图写回来的数量和实例发生在一个数据库和按星期和数据库定义的产品组的数量。下面是我的查询：

SELECT WeekCompleted, Product, COUNT(OrderNumber) as CorrectionCount FROM(
SELECT 
p.Abbreviation as Product 
,CAST(oi.OrderID as VARCHAR(MAX))+'.'+CAST(oi.OrderItemID as VARCHAR(MAX)) AS OrderNumber 
,CASE 
    WHEN o.ClientID IN (56156, 56394) 
     THEN DATEADD(week, datepart(ww, dbo.GetLatestMilestoneDate(oi.OrderID, oi.OrderItemID, 80)) 
      - 1, DATEADD(DAY, @@datefirst - DATEPART(weekday, CAST(YEAR(GETDATE()) AS VARCHAR) 
      + '-01-01') - 6, CAST(YEAR(GETDATE()) AS VARCHAR) + '-01-01')) 
    ELSE DATEADD(week, datepart(ww, dbo.GetLatestMilestoneDate(oi.OrderID, oi.OrderItemID, 130)) 
    - 1, DATEADD(DAY, @@datefirst - DATEPART(weekday, CAST(YEAR(GETDATE()) AS VARCHAR) 
    + '-01-01') - 6, CAST(YEAR(GETDATE()) AS VARCHAR) + '-01-01')) 
    END AS WeekCompleted 
,CASE 
    WHEN o.ClientID IN (56156,56394) THEN dbo.GetLatestMilestoneDate(oi.OrderID, oi.OrderItemID, 80) 
    ELSE dbo.GetLatestMilestoneDate(oi.OrderID, oi.OrderItemID, 130) END AS LastCompleted 
FROM 
OrderItems oi 
LEFT JOIN OrderItemMilestones oim on oim.OrderID = oi.OrderID and oim.OrderItemID = oi.OrderItemID 
JOIN Products p on p.ProductID = oi.ProductID 
JOIN Orders o on o.OrderID = oi.OrderID 
WHERE 
oim.MilestoneID = 90 
and QueueID = 0 
) src 
WHERE LastCompleted >= '2012-10-01' 
GROUP BY WeekCompleted, Product 

这里是需要

dbo.getlatestmilestonedate() returns a datetime date in this format: mm:dd:yyyy hh:mm:ss 

更多的信息和数据的一个示例表我目前有：

WeekCompleted   Product CorrectionCount 
2012-09-30 00:00:00.000 Product1 5 
2012-10-07 00:00:00.000 Product1 7 
2012-10-14 00:00:00.000 Product1 7 
2012-09-30 00:00:00.000 Product2 18 
2012-10-07 00:00:00.000 Product2 28 
2012-10-14 00:00:00.000 Product2 16 

这些数据返回究竟如何我想它以便原始数据不需要改变，除非需要达到最终目标，这是：

WeekCompleted    Product1  Product2 
2012-09-30 00:00:00.000  5    18 
2012-10-07 00:00:00.000  7    28 
2012-10-14 00:00:00.000  7    16 

我想我需要对此进行调整，但每次我尝试我只遇到语法错误，并且还不完全理解枢轴语法。

Answer 1

试试这个

select weekcompleted, product1, product2 
from (your query) src 
pivot (sum(CorrectionCount) for Product in ([Product1],[Product2])) p 

如果你的产品可以改变，那么你必须建立在枢轴上面的查询使用动态SQL

declare @columns varchar(4000) 
select @columns = ''; 
select @columns = ',[' + productname +']' 
    from (select distinct productname from products) v 
select @columns = substring (@columns, 2, len(@columns)) 

declare @sql nvarchar(4000) 
select @sql = 'select weekcompleted, ' + @columns 
+ ' from (your query) src ' 
+ ' pivot (sum(CorrectionCount) for Product in ('+@columns+')) p' 

exec sp_executesql @sql