select a.man_id,man_name,d.sex_name,zw_name,c.money
from man as a
left join zw as b on a.zw_id=b.zw_id
left join zw as c on a.man_id=c.man_id -- 同时关联zw字段，通过表别名区别开
left join xb as d on c.sex_id=d.sex_id
Sql Server中一个表2个字段关联同一个表(代码解决)
原文：http://www.jb51.net/article/34267.htm
