Django ORM数据去重

1、聚合中去重（聚合函数中添加参数distinct=True）

goods_pay_rank = Pay.objects.filter(
    pay_time__range=[start_time, end_time]).values(
        'order__order_details__goods_attribute__goods').annotate(
            count=Count('uuid', distinct=True),
            goods=F('order__order_details__goods_attribute__goods'
                    )).values('goods', 'count').order_by('-count')

2、查询集去重

ordered_objs = GoodsAttribute.objects.filter(
    goods__uuid=obj.uuid).distinct().order_by('create_time')