復制代碼 代碼如下:

DECLARE @TempTable table(UserID int , UserName nvarchar(50));
insert into @TempTable (UserID,UserName) values (1,'a')
insert into @TempTable (UserID,UserName) values (2,'b')

復制代碼 代碼如下:

<row>
<UserID>1</UserID>
<UserName>a</UserName>
</row>
<row>
<UserID>2</UserID>
<UserName>b</UserName>
</row>

復制代碼 代碼如下:

<lzy>
<UserID>1</UserID>
<UserName>a</UserName>
</lzy>
<lzy>
<UserID>2</UserID>
<UserName>b</UserName>
</lzy>

復制代碼 代碼如下:

<UserID>1</UserID>
<UserName>a</UserName>
<UserID>2</UserID>
<UserName>b</UserName>

復制代碼 代碼如下:

DECLARE @T1 table(UserID int , UserName nvarchar(50),CityName nvarchar(50));
insert into @T1 (UserID,UserName,CityName) values (1,'a','上海')
insert into @T1 (UserID,UserName,CityName) values (2,'b','北京')
insert into @T1 (UserID,UserName,CityName) values (3,'c','上海')
insert into @T1 (UserID,UserName,CityName) values (4,'d','北京')
insert into @T1 (UserID,UserName,CityName) values (5,'e','上海')

SELECT B.CityName,LEFT(UserList,LEN(UserList)-1) FROM (
SELECT CityName,
(SELECT UserName+',' FROM @T1 WHERE CityName=A.CityName FOR XML PATH('')) AS UserList
FROM @T1 A
GROUP BY CityName
)