Question

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


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

嗨，我正在使用SQL Server 2014.我想知道是否可以使用STUFF（）函数将插入结果放入一列。我在网上看到的例子都是检索。我尝试根据文档来做它似乎不正确。

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

是的，你可以：

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

如果您从SomeTable中选择，您将获得：

SubjectID   StudentName
1           Mary, John, Sam

SQL Server 2014插入功能

1 个答案: