SQL Server 2005数据透视表

Question

I want to pivot a column in SQL Server 2005. I'm pretty sure there is XML way to get it done but can't figure it out. Here is a table:

ID    Class
1     20002
1     20003
1     20004
2     20003
2     20012

Desired value is:

ID    Class
1     20002,20003,20004
2     20003,20012

Thanks in advance

Answer 1

I am not sure PIVOT (or UNPIVOT) are what you are looking for. Below is some code that I use when I need to get a CSV list embedded in a query. Hope it helps!

SELECT DISTINCT 
        ID
      , Class = STUFF(
                       cast(
                            (select ', ' + cast(Class as nvarchar) 
                             from TableName t2 
                             WHERE t2.ID = t1.ID 
                             for xml path('')) as nvarchar(2000))
                ,1,2, N'')
FROM TableName t1