example.py

order = (
    Order.objects
    .select_related("patient", "client")
    .prefetch_related(
        "orderstep_order__orderstepmisc_orderstep__misc",
        "orderstep_order__orderstepjob_orderstep"
    )
    .annotate(orderstep_order__row_number=number_subquery)
    .filter(pk=pk)
)