sql中用逗号拼接字符串

MSSQL中可以用STUFF函数拼接成字符串。

如：

SELECT  FieldSomeElse, ( SELECT STUFF(( SELECT  ',' + LinkField
                            FROM    Detail
                            WHERE   Id = Main.Id 
                            FOR XML PATH('')
                          ), 1, 1, '')
           ) AS LinkFieldString
FROM    Main