determine_order_by

# File activerecord/lib/arel/visitors/mssql.rb, line 120
        def determine_order_by(orders, x)
          if orders.any?
            orders
          elsif x.groups.any?
            x.groups
          else
            pk = find_left_table_pk(x.froms)
            pk ? [pk] : []
          end
        end