SQL Server 2008：将存储过程动态列的结果与SELECT语句的结果联接

如何解决SQL Server 2008：将存储过程动态列的结果与SELECT语句的结果联接

如果您不能使用动态存储过程中的数据创建临时表，为什么不直接在表上联接：

DECLARE @cols AS NVARCHAR(MAX),
    @colsNull AS NVARCHAR(MAX),
    @query  AS NVARCHAR(MAX)

select @cols = STUFF((SELECT distinct ',' + QUOTENAME(categories_name) 
                    from Categories
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

select @colsNull = STUFF((SELECT ',IsNull(' + QUOTENAME(categories_name)+', ''N'')'+' as '+QUOTENAME(categories_name) 
                    from Categories
                    group by categories_name, categories_id
                    order by categories_id
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

set @query = '
            select *
            from Products_Detail pd
            left join
            (
              SELECT products_id,
                    products_model,' + @colsNull + ' from 
               (
                  select p.products_id,
                    p.products_model,
                    c.categories_name,
                    ''Y'' flag
                  from products p
                  left join Products_Categories pc
                    on p.products_id = pc.products_id
                  left join Categories c
                    on pc.categories_id = c.categories_id
              ) x
              pivot 
              (
                  max(flag)
                  for categories_name in (' + @cols + ')
              ) p 
            ) p 
              on pd.products_id = p.products_id'

execute(@query)

参见带有演示的SQL Fiddle

解决方法

我想将这些结果与另一个表中的数据结合起来。我已经看到了执行此操作的各种示例，这些示例是创建一个 临时表
并将其插入其中，但是，这并不理想，因为存储过程会返回许多 动态列 ，这些列可能会发生变化。有没有办法动态地加入他们？

示例方案：

存储过程返回以下内容：

EXEC uspGetProductCategories

products_id | products_model | Leather Seats | Heated Seats | Tapedeck | Heater | Hybrid | Sunroof | Cruise Control
===================================================================================================================
100         | Saturn Vue     | N             | N            | Y        | N      | N      | N       | N
200         | Toyota Pruis   | Y             | N            | N        | Y      | Y      | N       | N
300         | Ford Focus     | N             | N            | N        | Y      | N      | N       | Y

我想用生成如下内容的SQL查询来加入它：

SELECT * FROM Products_Detail

products_id | manufacturer | purchaser | pay_type
=================================================
100         | GM           | GREG      | P
200         | TOYT         | SAM       | P
300         | FORD         | GREG      | L

换一种说法…

有没有一种轻松的方式来实现这一目标？这是我想要实现的一些psedo代码（尽管我知道这是行不通的）：

SELECT pd.*,sp.* FROM Products_Detail pd
    LEFT JOIN uspGetProductCategories sp ON pd.product_id = sp.product_id

同样，我知道您无法执行此操作，但希望它能够描述我正在寻找的逻辑。

所需输出示例

products_id | manufacturer | purchaser | pay_type | products_model | Leather Seats | Heated Seats | Tapedeck | Heater | Hybrid | Sunroof | Cruise Control
=========================================================================================================================================================
100         | GM           | GREG      | P        | Saturn Vue     | N             | N            | Y        | N      | N      | N       | N
200         | TOYT         | SAM       | P        | Toyota Pruis   | Y             | N            | N        | Y      | Y      | N       | N
300         | FORD         | GREG      | L        | Ford Focus     | N             | N            | N        | Y      | N      | N       | Y