node.js - Group Results per Month using Mongo

Question

I'm still trying to figured out to achieve this using Mongo. Hope anyone here can teach me and help me with my problem.

Here's my schema

    const User = {
    table: 'User',
    schema: {
        _id: {
            name : 'Id',
            type: db.keyType(),
            required: true
        },
        email: {
            name: 'Email',
            type: String,
            required: true,
            unique: true
        },
          }
}

desired results "19-12" is 19 = 2019 year and month 12 = December

    {
  "19-12": "5",
  "20-1": "22",
  "20-2": "20",
  "20-3": "4",
}

question from:https://stackoverflow.com/questions/65912554/group-results-per-month-using-mongo

Answer 1

Waitting for answers