I'm wondering about this code snippet from the documentation
<https://docs.djangoproject.com/en/3.1/topics/migrations/#data-migrations>
for person in Person.objects.all():
person.name = '%s %s' % (person.first_name, person.last_name)
person.save()
This looks like the N+1 Query problem but maybe I'm wrong. I usually avoid
this kind of code in my projects.
How many times does this hit the database?
Does the fact that it's in a migration (therefore a transaction) change
anything?
Perhaps, the better way would be to do
Person.objects.update(name=Concat(F('first_name'), Value(' '),
F('last_name')))
What's the correct way?
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