我想发送一系列昵称,找到与这些昵称相关的所有人.

//array of names to find
let nameArray: [String] = ["Tom","Tommy","Thomas"] 

// find all Persons who have a nickname associated with that person           
let predicate = NSPredicate(format: "ANY Person.nickName in %@",nameArray)
var fetch = NSFetchRequest(entityName: "Person")
fetch.predicate = predicate
var fetchError : NSError? = nil

// executes fetch
let results = context?.executeFetchRequest(fetch,error: &fetchError)

但是当我运行代码时,我收到以下错误：

‘NSInvalidArgumentException’,原因：’谓词的未实现的sql生成:(任何Person.nickName IN {“Tom”,“Tommy”,“Thomas”})’

我在这做错了什么？如果我删除谓词搜索,它会返回所有结果,但是一旦我添加了这一行,一切都会中断.