how attribute does mongodb uses to group by ? do they use only the "_id" or the ( "_id" AND "Total departments") I am slightly confused because "_id" and "Total Departments" are in the same curly bracket $group db.department.aggregate([ {…
I want to get the value of a nested object within an array. I get the _id of the parent object, as well as the _id of the child object within the array, but I am not able to retrieve…
I had a document like this: const myUser = 'e' //Collection Selection { level: [ { currentUser: 'f', stages: [ { users: ['a','b','c'] }, { users: ['b','d','e'] } ] }, { currentUser: 'g', stages: [ { users: ['y','x','w'] }, {…
I am trying to create a new document in the Form collection. This document references many FormSection documents. Here are the Schemas: const FormSchema = new Schema({ title: { type: String, required: true, unique: true }, description: { type: String,…
I am trying depoly a replicaset of mongodb in my kind kubernetes. Well, my first step is run thsi command: helm upgrade --install mongodb bitnami/mongodb --set mongodb.global.storageClass=standard --set mongodbRootPassword=root --set mongodbUsername=mongoUser --set mongodbPassword=mongoUser --set mongodbDatabase=articles --set mongodb.persistence.size=5Gi --set mongodb.service.type=NodePort --set…
I'm using MongoDB's TTL Index feature to automatically delete documents (in this case, email verification tokens) after a certain amount of time. I also use Mongoose, which creates this index via the expires property (on the createdAt timestamp): const emailVerifiationTokenSchema…
I have created a sigle app with a Schema and a Model to create a Collection and insert some Documents. I have my todoModel.js file: const mongoose = require("mongoose"); const Schema = mongoose.Schema; const todoSchema = new Schema({ username: String,…
im trying to update an array inside an object but i didnt find the right way to do this. my document looks like this: { "_id" : ObjectId("62792b4a0c9c5a00b6a8e17b"), "username" : "user_1", "words" : [ { "word" : "RATIONAL", "subwords" :…
I am new to MongoDB aggregations and I am scratching my head on how to do something similar to this with Mongo: Example SQL Query (if this was a relational DB): select id, name, (select max(createdAt) from events where user_id=u.id)…
I'm new to MERN. I faced an issue while using MongoDB with Mongoose. Genuinely, I have no idea about it. An error like this: const err = new MongooseError(message); MongooseError: Operation fruits.insertOne() buffering timed out after 10000ms Here is my…