Use date_extract_sql() for DateFields

class DateLookup(BuiltinLookup):

    def process_lhs(self, qn, connection, lhs=None):

        from django.db.models import DateTimeField

        lhs, params = super(DateLookup, self).process_lhs(qn, connection, lhs)

        if isinstance(self.lhs.output_type, DateTimeField):

            tzname = timezone.get_current_timezone_name() if settings.USE_TZ else None

            sql, tz_params = connection.ops.datetime_extract_sql(self.extract_type, lhs, tzname)

            return connection.ops.lookup_cast(self.lookup_name) % sql, tz_params

        else:

            return connection.ops.date_extract_sql(self.lookup_name, lhs), []

    def get_rhs_op(self, connection, rhs):

        return '= %s' % rhs