如何更正此SQL连接的相关名称？

我需要一个连接,从两个不同的表中产生三个具有相同名称的字段.当我尝试运行我的SQL查询,VS给我以下错误.

The objects “Politicalfigures” and “Politicalfigures” in the FROM clause have the same exposed names. Use correlation names to distinguish them.

我一直在尝试使用“AS”来区分这些字段,但是我没有找到一个可行的解决方案.这是我正在运行的SQL查询：

SELECT Countries.Name AS Country,Politicalfigures.Name AS President,Politicalfigures.Name AS VicePresident FROM Countries
LEFT OUTER JOIN Politicalfigures ON Countries.President_Id = Politicalfigures.Id
LEFT OUTER JOIN Politicalfigures ON Countries.VicePresident_Id = Politicalfigures.Id

如果从代码中不明显,这些是表.

>国家：Id,Name,President_Id,VicePresident_Id.
>政治图：Id,Name.
>参加表：国家,总统,副总统

(请注意,我的应用程序中的表和字段具有不同的名称,我将它们进行概括,以使此示例更清晰,并希望与其他人更相关.)

(我使用的工具是Visual Web Developer 2010 Express和sql Server 2008 Express.)

解决方法

为每个参考政治图则使用表别名：

SELECT 
  Countries.Name AS Country,P.Name AS President,VP.Name AS VicePresident
FROM
  Countries
  LEFT OUTER JOIN Politicalfigures AS P ON Countries.President_Id = P.Id
  LEFT OUTER JOIN Politicalfigures AS VP ON Countries.VicePresident_Id = VP.Id