to_sql.rb

      def visit_Arel_Nodes_SelectStatement o
        puts caller
        [
          (visit(o.with) if o.with),
          o.cores.map { |x| visit_Arel_Nodes_SelectCore x }.join,
          ("ORDER BY #{o.orders.map { |x| visit x }.join(', ')}" unless o.orders.empty?),
          (visit(o.limit) if o.limit),
          (visit(o.offset) if o.offset),
          (visit(o.lock) if o.lock),
        ].compact.join ' '
      end