# File lib/thinking_sphinx/middlewares/sphinxql.rb, line 236
      def scope_by_group
        query.group_by group_attribute        if group_attribute.present?
        query.group_best options[:group_best] if options[:group_best]
        query.order_within_group_by group_order_clause if group_order_clause.present?
        query.having options[:having]         if options[:having]
      end