Django ORM -> SQL 2

Rate.objects.select_related(depth=1).
    FILTER(begin_date__lte = datetime.now(), end_date__gte = datetime.now()).FILTER(
    Q(source__short_name = 'USD', dest__short_name = 'UZS') | Q(source__short_name = 'USD', dest__short_name = 'RUB'))

SELECT
    "rates_widget_rates"."id",
    "rates_widget_rates"."source_id",
    "rates_widget_rates"."dest_id",
    "rates_widget_rates"."rate",
    "rates_widget_rates"."begin_date",
    "rates_widget_rates"."end_date",
    T3."id",
    T3."name",
    T3."short_name",
    "rates_widget_currencies"."id",
    "rates_widget_currencies"."name",
    "rates_widget_currencies"."short_name"
FROM
    "rates_widget_rates"
    INNER JOIN "rates_widget_currencies"
        ON ("rates_widget_rates"."dest_id" = "rates_widget_currencies"."id")
    INNER JOIN "rates_widget_currencies" T3
        ON ("rates_widget_rates"."source_id" = T3."id")
WHERE
    ("rates_widget_rates"."begin_date" <= 2011-03-16 12:34:43.320052
     AND "rates_widget_rates"."end_date" >= 2011-03-16 12:34:43.320071
     AND (("rates_widget_currencies"."short_name" = UZS  AND T3."short_name" = USD )
           OR ("rates_widget_currencies"."short_name" = RUB  AND T3."short_name" = USD )))
LIMIT 21