怎样通过根据 bool 查询true和false的所有字段呢？

self.navigationItem.title = @"资金预约";

AVQuery *query = [AVQuery queryWithClassName:@"fund_order"];
[query whereKey:@"check_manager" equalTo:NULL];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
    if (!error) {
        // 检索成功
        NSLog(@"Successfully retrieved %lu posts.", (unsigned long)objects.count);
    } else {
        // 输出错误信息
        NSLog(@"Error: %@ %@", error, [error userInfo]);
    }
}];