aliases

# File activerecord/lib/active_record/associations/join_dependency.rb, line 168
        def aliases
          @aliases ||= Aliases.new join_root.each_with_index.map { |join_part, i|
            column_names = if join_part == join_root && !join_root_alias
              primary_key = join_root.primary_key
              primary_key ? [primary_key] : []
            else
              join_part.column_names
            end

            columns = column_names.each_with_index.map { |column_name, j|
              Aliases::Column.new column_name, "t#{i}_r#{j}"
            }
            Aliases::Table.new(join_part, columns)
          }
        end