SQL Server中的动态数据透视表列

I have a table named Property with following columns in SQL Server:

我有一个名为Property的表，其中包含SQL Server中的以下列：

Id    Name

there are some property in this table that certain object in other table should give value to it.

这个表中有一些属性，其他表中的某个对象应该给它赋值。

Id    Object_Id    Property_Id    Value

I want to make a pivot table like below that has one column for each property I've declared in 1'st table:

我想创建一个像下面这样的数据透视表，它为我在第一个表中声明的每个属性都有一列：

Object_Id    Property1    Property2    Property3    ...

I want to know how can I get columns of pivot dynamically from table. Because the rows in 1'st table will change.

我想知道如何从表中动态获取数据列。因为第1个表中的行会改变。

1 个解决方案

#1

Something like this:

像这样的东西：

DECLARE @cols AS NVARCHAR(MAX);
DECLARE @query AS NVARCHAR(MAX);

select @cols = STUFF((SELECT distinct ',' +
                        QUOTENAME(Name)
                      FROM property
                      FOR XML PATH(''), TYPE
                     ).value('.', 'NVARCHAR(MAX)') 
                        , 1, 1, '');

SELECT @query =

'SELECT *
FROM
(
  SELECT
    o.object_id,
    p.Name,
    o.value
  FROM propertyObjects AS o
  INNER JOIN property AS p ON o.Property_Id = p.Id
) AS t
PIVOT 
(
  MAX(value) 
  FOR Name IN( ' + @cols + ' )' +
' ) AS p ; ';

 execute(@query);

SQL Fiddle Demo.

This will give you something like this:

这会给你这样的东西：

| OBJECT_ID | PROPERTY1 | PROPERTY2 | PROPERTY3 | PROPERTY4 |
-------------------------------------------------------------
|         1 |        ee |        fd |       fdf |      ewre |
|         2 |       dsd |       sss |      dfew |       dff |