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Django queryset存在

代码示例

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django order by 

class Meta:
        ordering = ('date',)
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django过滤器exsist 

if table.objects.filter(prop='value').count() > 0:
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django queryset存在 

if some_queryset.exists():
    print("There is at least one object in some_queryset")

类似页面

带有示例的类似页面

过滤django或
django批量更新
django queryset存在
django过滤器exsist
查询集

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