Question

我在SQL sever 2008中有一个像这样的表

ID Name Have
1  Book PageNumber    
2  Book Title
3  Book Papers
4  Car Wheels
5  Car Doors
6  Car Engine
7  Car Windows

我想像这样改变列和行的顺序

Name A          B      C       D
Book PageNumber Title  Papers  -
Car  Wheels     Doors  Engine  Windows

是否可以编写自动进行此更改的查询？我在使用交叉表的Microsoft Access中完成了这个，但在SQL中我不知道。

的问候，

Answer 1

您可以使用PIVOT运算符

来获得所需的结果

select name
     , [1] as A
     , [2] as B
     , [3] as C
     , [4] as D    
  from ( select name
              , have
              , row_number() over(partition by name order by id) as rn
           from t1
        ) s
 pivot (
   max(have) for rn in ([1], [2],[3], [4])
 ) as pvt

结果：

NAME    A               B         C         D
------------------------------------------------------------
Book    PageNumber      Title     Papers    (null)
Car     Wheels          Doors     Engine    Windows

SQLFiddle Demo

在SQL Server中将行转换为具有特定条件的列

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