I ran into an issue which ActiveRecord find method creates wrong SQL when you set has_one association which through belong_to association into :join option. Detail, tests and fix are here. https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/3684-invalid-sql-is-created-when-you-set-has_one-through-association-to-join Can someone take a look at it and give me thoughts? Tatsuya -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group. To post to this group, send email to rubyonrails-core@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-core+unsubscribe@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-core?hl=en.