在mongodb中查找文档中的子元素

我正在编写以下文档

{
"_id" : 123344223,
"firstName" : "gopal",
"gopal" : [ 
    {
        "uuid" : "123",
        "name" : "sugun",
        "sudeep" : [ 
            {
                "uuid" : "add32",
                "name" : "ssss"
            }, 
            {
                "uuid" : "fdg456",
                "name" : "gfg"
            }
        ]
    }, 
    {
        "uuid" : "222",
        "name" : "kiran"
    }
]
} 

我想得到我的输出如下

{
"_id" : 456,
"gopal" : [ 
    {
        "uuid" : "123",
        "name" : "sugun",
        "sudeep" : [ 
            {
                "uuid" : "add32",
                "name" : "ssss"
            }
        ]
    }
]
}

我尝试了很多东西，比如

db.People.findOne({_id:123},{gopal:{$elemMatch:{uuid:"123",sudeep:{$elemMatch:{uuid:"add32"}}}}});

但不管我怎么做，它都会像这样返回文档

{
"_id" : 123,
"gopal" : [ 
    {
        "uuid" : "123",
        "name" : "sugun",
        "sudeep" : [ 
            {
                "uuid" : "add32",
                "name" : "ssss"
            }, 
            {
                "uuid" : "fdg456",
                "name" : "gfg"
            }
        ]
    }
]
}

您能帮忙吗？

您知道MongoDB吗

输出

{
        "_id" : 123,
        "firstName" : "gopal",
        "gopal" : {
                "uuid" : "123",
                "name" : "sugun",
                "sudeep" : {
                        "uuid" : "add32",
                        "name" : "ssss"
                }
        }
}

---

在聚合管道中使用$unwind

聚合（[{$match:{uuid:'123'}，{$match:{gopal.uuid:'123'}，{$unwind:'sudeep'}，{$match:{uuid:'add32'}}]）

的可能重复项

{
        "_id" : 123,
        "firstName" : "gopal",
        "gopal" : {
                "uuid" : "123",
                "name" : "sugun",
                "sudeep" : {
                        "uuid" : "add32",
                        "name" : "ssss"
                }
        }
}