SQL Server 将某一列的值拼接成字符串

实例 ：

select AuxTypeName + '，' from 
(
SELECT DISTINCT(AuxTypeName) FROM _VIPHall_Link_AuxType
LEFT JOIN dbo.[_VIPHall] ON [_VIPHall_Link_AuxType].VIPHallID = [_VIPHall].VIPHallID
LEFT JOIN dbo._Dim_VIPHall_AuxType ON [_Dim_VIPHall_AuxType].AuxTypeID = [_VIPHall_Link_AuxType].AuxTypeID
WHERE [_VIPHall].VIPHallID = 157
) AS tmp
 for xml path('')
 

样例 ：

select( select CAST(字段 as varchar)+',' 2from 表 for xml path('')  ) as A