我正在尝试过滤显示Employees的表列表的结果。一个过滤器应显示属于某个公司的每个员工（基于公司名称）。
在Core Data中，实体公司与实体Employee具有To-Many关系。
_fetchRequest = [[NSFetchRequest alloc] init];
[_fetchRequest setEntity:[NSEntityDescription entityForName:@"Employee" inManagedObjectContext:_moc]];
NSPredicate *employeeNamePredicate = [NSPredicate predicateWithFormat:@"name != %@",@"Bob"];
NSPredicate *employeeCompanyNamePredicate = [NSPredicate predicateWithFormat:@"company.name == %@",companyName];
NSArray *filters = @[employeeNamePredicate, employeeCompanyNamePredicate];
NSPredicate *compoundPredicate = [NSCompoundPredicate andPredicateWithSubpredicates:filters];
[_fetchRequest setPredicate:compoundPredicate];
NSError *error = nil;
_filteredResult = [_moc executeFetchRequest:_fetchRequest error:&error];
但没有真正发生。 @“company.name”似乎没有按预期工作。我究竟做错了什么？