change_order_direction

# File activerecord/lib/active_record/connection_adapters/sqlserver_adapter.rb, line 514
        def change_order_direction(order)
          case order
            when  /\bDESC\b/i     then order.gsub(/\bDESC\b/i, "ASC")
            when  /\bASC\b/i      then order.gsub(/\bASC\b/i, "DESC")
            else                  String.new(order).split(',').join(' DESC,') + ' DESC'
          end
        end