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- # Don't.Delete one by one.
- for entry in Entry.objects.all():
- entry.delete()
- # Do.Delete all at once.
- Entry.objects.all().delete()
- # Don't
- for entry in Entry.objects.all():
- entry.likes += 1
- entry.save()
- # Do
- Entry.objects.update(likes=F('likes')+1)
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