CODEWITHSUNDEEP
django
H.fate
H.fate

Reputation: 644

What is query speed or difference between Django ForeignKey and OneToOneField

I've seen this : https://groups.google.com/forum/#!topic/django-users/VEDZtuND2XM

But on that answer, Ronaldo said just about convenience not the speed of query speed.

Is there speed or performance difference between ForeignKey(unique=true) and OneToOneField?

Or is there any other advantages on using OneToOneField than ForeignKey(unique=true) ?

Upvotes: 1

Views: 269

Answers (1)

luminousmen
luminousmen

Reputation: 2169

The general answer is no. But there is some performance difference if you doing some general stuff on reverse relations: when you use reverse relations defined via OneToOneField you get an model instance, contrary to Manager for ForeignKey reverse relation and as a consequence there's always a database hit - and this is costly.

Upvotes: 1

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