📜  django sum get 0 if none - Python 代码示例
📅  最后修改于: 2022-03-11 14:45:31.689000             🧑  作者: Mango
代码示例2
answers = Answer.objects.filter()
.annotate(score=Coalesce(Sum('vote__type'), 0))
.order_by('-score')