select_limited_ids_list

# File activerecord/lib/active_record/associations.rb, line 969
        def select_limited_ids_list(options)
          connection.select_values(
            construct_finder_sql_for_association_limiting(options),
            "#{name} Load IDs For Limited Eager Loading"
          ).collect { |id| connection.quote(id) }.join(", ")
        end