Question

我正在使用SSMS 2008以及以下查询：

DECLARE @TestData TABLE 
( 
     address_desc NVARCHAR(100)  NULL 
    ,people_id UNIQUEIDENTIFIER  NULL 
); 

INSERT  @TestData 
SELECT a.address_desc, a.people_id 
FROM dbo.address_view a 

SELECT  a.people_id, 
    (SELECT SUBSTRING( 
        (SELECT ';'+b.address_desc 
        FROM    @TestData b  
        WHERE   a.people_id = b.people_id 
        FOR XML PATH('')) 
        ,2 
        ,4000) 
    ) GROUP_CONCATENATE 
FROM    @TestData a 
GROUP BY a.people_id

此查询有效，但我想将其转换为视图或函数，以便我可以从不同的存储过程中调用它。我怎样才能做到这一点？据我所知，变量不能在VIEW语句中声明。

Hong，这是我根据您的建议更新的查询，它给了我错误：

DECLARE @TestData TABLE 
( 
     address_desc NVARCHAR(100)  NULL 
    ,people_id UNIQUEIDENTIFIER  NULL 
); 

INSERT  @TestData  
SELECT a.address_desc, a.people_id  FROM dbo.address_view a 

SELECT  a.people_id, 
(SELECT address_desc, people_id FROM dbo.address_view),
    (SELECT SUBSTRING( 
        (SELECT ';'+b.address_desc 
        FROM    @TestData b  
        WHERE   a.people_id = b.people_id 
        FOR XML PATH('')) 
        ,2 
        ,4000) 
    ) GROUP_CONCATENATE 
FROM    @TestData a 
GROUP BY a.people_id

Answer 1

在上一个select查询中，将@TestData替换为子查询(SELECT address_desc, people_id FROM dbo.address_view)，然后删除临时表@TestData。

试试这个：

Create View YourView As
    SELECT  a.people_id,      
            (SELECT SUBSTRING(          
                    (SELECT ';'+b.address_desc          
                     FROM    (SELECT address_desc, people_id FROM dbo.address_view) b           
                     WHERE   a.people_id = b.people_id          
                     FOR XML PATH(''))          
                     ,2          
                     ,4000)      
                     ) GROUP_CONCATENATE  
    FROM    (SELECT address_desc, people_id FROM dbo.address_view) a  
    GROUP BY a.people_id

如何在XML PATH查询上创建视图或函数？

1 个答案: