build_join_dependencies

# File activerecord/lib/active_record/relation/query_methods.rb, line 1562
      def build_join_dependencies
        joins = joins_values | left_outer_joins_values
        joins |= eager_load_values unless eager_load_values.empty?
        joins |= includes_values unless includes_values.empty?

        join_dependencies = []
        join_dependencies.unshift construct_join_dependency(
          select_named_joins(joins, join_dependencies), nil
        )
      end