有谁知道是否有可能为ActiveRecord表连接设置别名？
就像是：
User.find(:all,:alias => "Users as u",:joins => "Friends as f",:select => "u.id,f.name")
有任何想法吗？
解决方法
是的,但如果覆盖连接,则需要包含“ON”语句和join语句.
User.find(:all,:joins => " as u INNER JOIN Friends as f ON f.user_id = u.id",f.name")
或者在Rails 3中
User.joins("as u INNER JOIN Friends as f on f.user_id = u.id")
.select("u.id,f.name")
.all