的SQL Server 2014插入的东西功能

Question

SubjectID  StudentName 
----------  ------------- 
1    Mary 
1    John 
1    Sam 


SubjectID  StudentName 
----------  ------------- 
1    Mary, John, Sam 

嗨，我使用SQL Server 2014，我想知道这是否是可以使用的东西（）函数来插入结果成一列。我在网上看到的例子都在检索。我试图根据它的文档做它似乎并不正确。

查询

@"INSERT INTO ApplicationOtherInfo 
         (ApplicationId, AppOptionCode 
         ) values 
         (@applicationId, @appCode 
         )"; 

SELECT STUFF((SELECT ',' + AppOptionCode 
       FROM ApplicationOtherInfo 
       ORDER BY AppOptionCode 
       FOR XML PATH('')), 1, 1, '') 

Answer 1

是，您可以：

DECLARE @Students TABLE (
    SubjectID int, 
    StudentName nvarchar(max) 
) 
INSERT INTO @Students VALUES 
(1, 'Mary'), 
(1, 'John'), 
(1, 'Sam') 

INSERT INTO SomeTable 
SELECT DISTINCT 
     s.SubjectID, 
     STUFF((SELECT ', ' + StudentName 
       FROM @Students 
       WHERE s.SubjectID = SubjectID 
       FOR XML PATH('')), 1, 2, '') 
         as StudentName 
FROM @Students s 

如果从SomeTable选择您将获得：

SubjectID StudentName 
1   Mary, John, Sam