Home/ Questions/Q 3217796
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-17T15:27:11+00:00

Assume you have an entity called Library and each Library can contain Books. It

  • 0

Assume you have an entity called Library and each Library can contain Books. It is possible for a Library to have no books at all. Is it possible to filter a fetch request so I only retrieve the Libraries that contain books?

I have read that you can use the SIZE tag for NSArrays (for example, myArray[SIZE]) in an NSPredicate, but this tag does not seem to work for NSSets (in a to-many relationship in Core Data).

Is there an equivalent tag that can be used to count the number of Books in a Library and filter the results based on this?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You can use books.@count, assuming books is the to-many relationship from Library to Book.

    • 0