Differences between Q and exclude in Django filter

Question

I am wondering what is the exact difference between these two kinds of Django filter from performance aspects.

User.objects.filter(Q(first_name='R') & ~Q(last_name='Z')

and

User.objects.filter(first_name='R').exclude(last_name='Z')

Is there any other differences except performance? Thanks in advance

Answer 1

实际上根本没有区别，甚至没有区别。两者都评估为完全相同的查询；它们只是拼写同一件事的不同方式。