NSPredicate语句:
fetchRequest.predicate = [NSPredicate predicateWithFormat:@"url = %@ AND type = %@ OR type = %@", newsStory.url, [NSNumber numberWithInt:StoryHighlighted], [NSNumber numberWithInt:StorySavedAndHighlighted]];
实现的是通过指定URL获取story并且标记(高亮),但是查询结果不正常。不知道该怎么实现?