这是我在文本模式下的示例MongoDB

我想检索每个用户的数据 . 我也想要_id因为在一个完整的文档中它有几个具有相似结构的_id .

我尝试使用unwind运算符，因为该对象包含嵌套数组，如下所示：

db.getCollection('topic_stats_2').aggregate([{ $unwind : "$usages.type.users.text" }, { $unwind : "$usages.type.users.stats.xyz1" }, { $unwind : "$usages.type.users.stats.xyz2" }, { $unwind : "$usages.type.users.stats.xyz3" }, { $unwind : "$usages.type.users.xyz4" }, { $unwind : "$usages.type.users.xyz5" }])

但它没有结果 .

我希望结果以表格格式这样 . 我知道该表将包含大量冗余数据 . 但这就是我想要的 .

_id | count | xyz4 | xyz5 | xyz1 | xyz2 | xyz3 | text | type |

| | | | | | | | |

| | | | | | | | |

/* 1 */

{

"_id" : “photo",

"count" : 236,

"usages" : [

{

"type" : 1,

"users" : [

{

"text" : “jkncfkjfdn",

"stats" : {

“xyz1" : 6,

“xyz2" : 1,

“xyz3" : 1194

},

“xyz4" : "julius babao",

“xyz5" : "juLiusbabao"

},

{

"text" : “fcnf",

"stats" : {

“xyz1" : 9,

“xyz2" : 6,

“xyz3" : 1199

},

“xyz4" : "Dman",

“xyz5" : "DmanTheDesigner"

},

{

"text" : “dckejsndc",

"stats" : {

“xyz1" : 1,

“xyz2" : 0,

“xyz3" : 1200

},

“xyz4" : "EastmanHouse",

“xyz5" : "EastmanHouse"

}

]

},

{

"type" : 2,

"users" : [

{

"text" : “msdnc",

"stats" : {

“xyz1" : 1,

“xyz2" : 1,

“xyz3" : 1168

},

“xyz4" : "Shayne",

“xyz5" : "RKTay"

},

{

"text" : “kfjnvfv",

"stats" : {

“xyz1" : 0,

“xyz2" : 0,

“xyz3" : 523

},

“xyz4" : "andy stitches",

“xyz5" : "myproudmendes"

},

{

"text" : “jkopoiuyt",

"stats" : null,

“xyz4" : "jm",

“xyz5" : "jihannelayosa"

}

]

},

{

"type" : 3,

"users" : [

{

"text" : “opted",

"stats" : {

“xyz1" : 58,

“xyz2" : 32,

“xyz3" : 1192

},

“xyz4" : "♪♫Lil Darryl♫♪",

“xyz5" : "LilDarryl301"

},

{

"text" : "Cloud 9",

"stats" : {

“xyz1" : 1,

“xyz2" : 1,

“xyz3" : 1171

},

“xyz4" : "FGN",

“xyz5" : "pretty_brown66"

},

{

"text" : "Cloud 9",

"stats" : {

“xyz1" : 0,

“xyz2" : 0,

“xyz3" : 997

},

“xyz4" : "Travis Porter Jr .",

“xyz5" : "AyoTravo"

}

]

},

{

"type" : 4,

"users" : [

{

"text" : “while",

"stats" : {

“xyz1" : 1,

“xyz2" : 1,

“xyz3" : 1200

},

“xyz4" : "LEGO Darth Vader",

“xyz5" : "LegoDarthVader"

},

{

"text" : “xjw",

"stats" : {

“xyz1" : 1,

“xyz2" : 1,

“xyz3" : 1198

},

“xyz4" : "The Brothers Brick",

“xyz5" : "BrothersBrick"

},

{

"text" : “pol",

"stats" : {

“xyz1" : 1,

“xyz2" : 1,

“xyz3" : 1197

},

“xyz4" : "BYTES & BRICKS",

“xyz5" : "lego_bb"

}

]

},

{

"type" : 5,

"users" : [

{

"text" : “qtwqyw",

"stats" : {

“xyz1" : 1,

“xyz2" : 1,

“xyz3" : 1155

},

“xyz4" : "Kell_1976",

“xyz5" : "LuvsMyMunchkie"

},

{

"text" : “ytyty",

"stats" : {

“xyz1" : 12,

“xyz2" : 4,

“xyz3" : 1200

},

“xyz4" : "carriewildes",

“xyz5" : "carriewildes"

},

{

"text" : "from the high.",

"stats" : {

“xyz1" : 0,

“xyz2" : 0,

“xyz3" : 1067

},

“xyz4" : "jake☄",

“xyz5" : "w0rshiptheking"

}

]

}

]

}

有人可以帮我解决这个问题吗？