我正在尝试将特定键的所有文档组织成一个数组。如果任何其他参数不同，我不想一次又一次地获得相同的关键元素。 样本文档：-

{
    name:"sweta",age:23
    address:india,hobby:singing
},{
    name:"john",age:24
    address:germany,{
    name:"peter",age:24
    address:india,hobby:dancing
},{
    name:"marry",

我尝试了什么？

return db.aggregate([
 {
       $match:{age:23}
 },{
       "$group":{
           "_id": {"age":"$age"},}
 },{   
       "$group":{
           "_id":"$_id.age","name":{ $first: "$_id.name"},"address":{ $first: "$_id.address"},"hobby":{ $first: "$_id.hobby"},}
])

以这种格式进行基本分组会减少最大的业务逻辑。

预期答案=

  [
      {
        "23":[
                {name:"sweta",address:india,hobby:singing},{name:"marry",]
       },{
          "24":[
                {name:"john",address:germany,{name:"peter",address:france,hobby:singing}
             ]
         }

 ]

有人知道如何得到这个吗？