如何按teacherId、scoreTypeId、studentId和subjectId对多个数组进行分组？

Question

我有集合score和scoreDetail，我想通过teacherId，scoreTypeId，studentId和subjectId对每个我尝试使用聚合的多个数组进行分组，但它仍然是错误的，我不知道。我已经设法对数组进行分组，但我不知道如何对数据进行分组，所以请帮助我

分数详情

/* 1 */
{
    "_id" : "667d6f13c0e5693864390ee0",
    "prefixId" : "667a7c3e04a229a7be807ae6",
    "tranDate" : ISODate("2024-07-02T20:54:27.971+07:00"),
    "sectionId" : "667d68ab313014638d27a01e",
    "examName" : "Attendance 2024",
    "scoreTypeId" : "667a7bc304a229a7be807acc",
    "teacherId" : "667632f516284123d59de97b",
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",
    
},

/* 2 */
{
    "_id" : "667d6efcc0e569386439063c",
    "prefixId" : "667a7c3e04a229a7be807ae6",
    "tranDate" : ISODate("2024-07-02T20:54:04.011+07:00"),
    "sectionId" : "667d68ab313014638d27a01e",
    "examName" : "Attendance 2024",
    "scoreTypeId" : "667a7bc304a229a7be807acc",
    "teacherId" : "66276f6d07b416e047311ca1",
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",
    
},

/* 3 */
{
    "_id" : "667d6e83c0e569386438e8c6",
    "prefixId" : "667a7c3e04a229a7be807ae6",
    "tranDate" : ISODate("2024-07-01T20:52:03.693+07:00"),
    "sectionId" : "667d68ab313014638d27a01e",
    "examName" : "Attendance 2024",
    "scoreTypeId" : "667a7bc304a229a7be807acc",
    "teacherId" : "667632f516284123d59de97b",
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",
},

/* 4 */
{
    "_id" : "667d6e55c0e569386438d967",
    "prefixId" : "667a7c3e04a229a7be807ae6",
    "tranDate" : ISODate("2024-07-01T20:52:34.460+07:00"),
    "sectionId" : "667d68ab313014638d27a01e",
    "examName" : "Attendance 2024",
    "scoreTypeId" : "667a7bc304a229a7be807acc",
    "teacherId" : "66276f6d07b416e047311ca1",
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",

}

分数详情

/* 1 */
{
    "_id" : "667d6f14c0e5693864390ee3",
    "tranDate" : ISODate("2024-07-02T20:54:27.971+07:00"),
    "scoreId" : "667d6f13c0e5693864390ee0",
    "studentId" : "666fe672d755bdf45ac5a4d4",
    "scores" : [
        {
            "subjectId" : "66276f6d07b416e047311d73",
            "value" : 0,
                    }
    ],
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",
    
},

/* 2 */
{
    "_id" : "667d6f14c0e5693864390ee2",
    "tranDate" : ISODate("2024-07-02T20:54:27.971+07:00"),
    "scoreId" : "667d6f13c0e5693864390ee0",
    "studentId" : "66616dff7ec3fe1d9097c0b6",
    "scores" : [
        {
            "subjectId" : "66276f6d07b416e047311d73",
            "value" : 1,
            
        }
    ],
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",
    
},

/* 3 */
{
    "_id" : "667d6efcc0e5693864390641",
    "tranDate" : ISODate("2024-07-02T20:54:04.011+07:00"),
    "scoreId" : "667d6efcc0e569386439063c",
    "studentId" : "666fe672d755bdf45ac5a4d4",
    "scores" : [
        {
            "subjectId" : "66276f6d07b416e047311d73",
            "value" : 0,
            
        }
    ],
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",
    
},

/* 4 */
{
    "_id" : "667d6efcc0e569386439063f",
    "tranDate" : ISODate("2024-07-02T20:54:04.011+07:00"),
    "scoreId" : "667d6efcc0e569386439063c",
    "studentId" : "66616dff7ec3fe1d9097c0b6",
    "scores" : [
        {
            "subjectId" : "66276f6d07b416e047311d73",
            "value" : 2,
            
        }
    ],
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",

},

/* 5 */
{
    "_id" : "667d6ea2c0e569386438f302",
    "tranDate" : ISODate("2024-07-01T20:52:34.460+07:00"),
    "scoreId" : "667d6e55c0e569386438d967",
    "studentId" : "666fe672d755bdf45ac5a4d4",
    "scores" : [
        {
            "subjectId" : "66276f6d07b416e047311d73",
            "value" : 0,
            
        }
    ],
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",
    
},

/* 6 */
{
    "_id" : "667d6ea2c0e569386438f300",
    "tranDate" : ISODate("2024-07-01T20:52:34.460+07:00"),
    "scoreId" : "667d6e55c0e569386438d967",
    "studentId" : "66616dff7ec3fe1d9097c0b6",
    "scores" : [
        {
            "subjectId" : "66276f6d07b416e047311d73",
            "value" : 0,
            
        }
    ],
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",
    
},

/* 7 */
{
    "_id" : "667d6e83c0e569386438e8cb",
    "tranDate" : ISODate("2024-07-01T20:52:03.693+07:00"),
    "scoreId" : "667d6e83c0e569386438e8c6",
    "studentId" : "666fe672d755bdf45ac5a4d4",
    "scores" : [
        {
            "subjectId" : "66276f6d07b416e047311d73",
            "value" : 2,
            
        }
    ],
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",
    
},

/* 8 */
{
    "_id" : "667d6e83c0e569386438e8c9",
    "tranDate" : ISODate("2024-07-01T20:52:03.693+07:00"),
    "scoreId" : "667d6e83c0e569386438e8c6",
    "studentId" : "66616dff7ec3fe1d9097c0b6",
    "scores" : [
        {
            "subjectId" : "66276f6d07b416e047311d73",
            "value" : 0,
            
        }
    ],
    "branchId" : "ZgqaTMBFkEZ7PkRi5",
    "comId" : "p6nB3E8gFCn98n6ZQ",
    
}

我的期待是这样的

[
    {
        "_id": "667d6ea2c0e569386438f302",
        "teacherId": "66276f6d07b416e047311ca1",
        "tranDate": ISODate("2024-07-01T20:52:34.460+07:00"),
        "scoreId": "667d6e55c0e569386438d967",
        "studentId": "666fe672d755bdf45ac5a4d4",
        "scores": [
            {
                "tranDate": ISODate("2024-07-01T20:52:34.460+07:00"),
                "subjectId": "66276f6d07b416e047311d73",
                "value": 0,
            },
            {
                "tranDate": ISODate("2024-07-02T20:54:04.011+07:00"),
                "subjectId": "66276f6d07b416e047311d73",
                "value": 0,

            }
        ],
        "branchId": "ZgqaTMBFkEZ7PkRi5",
        "comId": "p6nB3E8gFCn98n6ZQ",
    },
    {
        "_id": "667d6e83c0e569386438e8cb",
        "teacherId": "667632f516284123d59de97b",
        "tranDate": ISODate("2024-07-01T20:52:03.693+07:00"),
        "scoreId": "667d6e83c0e569386438e8c6",
        "studentId": "666fe672d755bdf45ac5a4d4",
        "scores": [
            {
                "tranDate": ISODate("2024-07-01T20:52:03.693+07:00"),
                "subjectId": "66276f6d07b416e047311d73",
                "value": 2,
            },
            {
                "tranDate": ISODate("2024-07-02T20:54:27.971+07:00"),
                "subjectId": "66276f6d07b416e047311d73",
                "value": 0,

            }
        ],
        "branchId": "ZgqaTMBFkEZ7PkRi5",
        "comId": "p6nB3E8gFCn98n6ZQ",
    },

    /* 2 */
    {
        "_id": "667d6ea2c0e569386438f300",
        "teacherId": "66276f6d07b416e047311ca1",
        "tranDate": ISODate("2024-07-01T20:52:34.460+07:00"),
        "scoreId": "667d6e55c0e569386438d967",
        "studentId": "66616dff7ec3fe1d9097c0b6",
        "scores": [
            {
                "tranDate": ISODate("2024-07-01T20:52:34.460+07:00"),
                "subjectId": "66276f6d07b416e047311d73",
                "value": 0,
            },
            {
                "tranDate": ISODate("2024-07-02T20:54:04.011+07:00"),
                "subjectId": "66276f6d07b416e047311d73",
                "value": 2,

            }
        ],
        "branchId": "ZgqaTMBFkEZ7PkRi5",
        "comId": "p6nB3E8gFCn98n6ZQ",
    },
    {
        "_id": "667d6e83c0e569386438e8c9",
        "teacherId": "667632f516284123d59de97b",
        "tranDate": ISODate("2024-07-01T20:52:03.693+07:00"),
        "scoreId": "667d6e83c0e569386438e8c6",
        "studentId": "66616dff7ec3fe1d9097c0b6",
        "scores": [
            {
                "tranDate": ISODate("2024-07-01T20:52:03.693+07:00"),
                "subjectId": "66276f6d07b416e047311d73",
                "value": 0,
            },
            {
                "tranDate": ISODate("2024-07-02T20:54:27.971+07:00"),
                "subjectId": "66276f6d07b416e047311d73",
                "value": 1,

            }
        ],
        "branchId": "ZgqaTMBFkEZ7PkRi5",
        "comId": "p6nB3E8gFCn98n6ZQ",
    },
]

Answer 1

1. $lookup

   - 连接 score 和 scoreDetail 集合并将结果作为

   scores

   数组返回。 1.1.

   $match

   - 按

   scoreId

   过滤文档。 1.2.

   $unwind

   - 将

   scores

   数组解构为多个文档。 1.3.

   $project

   - 装饰输出文档。

2. $project

   - 装饰输出文档。

db.score.aggregate([
  {
    "$lookup": {
      "from": "scoreDetail",
      "let": {
        scoreId: "$_id"
      },
      "pipeline": [
        {
          $match: {
            $expr: {
              $eq: [
                "$scoreId",
                "$$scoreId"
              ]
            }
          }
        },
        {
          $unwind: "$scores"
        },
        {
          $project: {
            _id: 0,
            tranDate: "$tranDate",
            subjectId: "$scores.subjectId",
            value: "$scores.value"
          }
        }
      ],
      "as": "scores"
    }
  },
  {
    $project: {
      "_id": 1,
      "teacherId": 1,
      "tranDate": 1,
      "scoreId": 1,
      "studentId": 1,
      "scores": 1,
      "branchId": 1,
      "comId": 1
    }
  }
])

演示@Mongo Playground