core-data Sort Descriptors Multiple Sort Descriptors
Example
You can also set multiple sort descriptors, to sort by one attribute within another. For example, return all entries ordered by date, and by name within each date:
let fetchRequest = NSFetchRequest(entityName: "NAME_OF_ENTITY")
let sortDescriptor1 = NSSortDescriptor(key: "name", ascending: true)
let sortDescriptor2 = NSSortDescriptor(key: "date", ascending: true)
fetchRequest.sortDescriptors = [sortDescriptor1, sortDescriptor2]
