Core data 在核心数据获取请求中忽略谓词

有人能告诉我为什么忽略下面的questionFetch谓词，返回的questionResults.count是整个数据集中的行数吗？数据集中只有两行questionType等于0，这应该是返回的唯一两行。而是返回所有88行数据

let questionFetch: NSFetchRequest<Question> = Question.fetchRequest()
questionFetch.predicate = NSPredicate(format: "%K == %i”,
    #keyPath(Question.questionType), currentQuestionType)
let questionResults = try 
    modelController.coreDataStack.managedContext.fetch(questionFetch)
print("questionResults.count: ", questionResults.count)

然而，下面的choiceFetch谓词使用几乎相同的逻辑，适当地限制了结果

let choiceFetch: NSFetchRequest<Choice> = Choice.fetchRequest()
choiceFetch.predicate = NSPredicate(format: "%K == %i", 
    #keyPath(Choice.questionID), currentQuestionID)
let choiceResults = try managedContext.fetch(choiceFetch)
print("choiceResults.count: ", choiceResults.count)

let choiceFetch:NSFetchRequest=Choice.fetchRequest（）
choiceFetch.predicate=NSPredicate（格式：“%K==%i”，
#密钥路径（Choice.questionID），currentQuestionID）
让choiceResults=尝试managedContext.fetch（choiceFetch）
打印（“choiceResults.count:，choiceResults.count”）

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任何想法都可以。

questionType属性是字符串还是数字？questionType是int，就像questionID是第二个代码块中的int一样。

let choiceFetch: NSFetchRequest<Choice> = Choice.fetchRequest()
choiceFetch.predicate = NSPredicate(format: "%K == %i", 
    #keyPath(Choice.questionID), currentQuestionID)
let choiceResults = try managedContext.fetch(choiceFetch)
print("choiceResults.count: ", choiceResults.count)