I have relative field and in relative I have subRelatives and it continues like nested array. Mean in subRelatives I have subRelatives and some time its 10 times continues process. My code router.get(`/userTree/:id`, async (req, res) => { const userTrees…
I was wondering if it was possible to somehow use the $match operator within the $sum function for aggregation. { "$unwind": "$info.avatarInfoList" }, { "$unwind": "$info.avatarInfoList.equipList" }, { "$unwind": "$info.avatarInfoList.equipList.flat.reliquarySubstats" }, { "$project": { "name" : "$name", "character" : "$info.avatarInfoList.avatarId",…
I installed MongoDB community Server from this link. But when I look into C:Program FilesMongoDBServer6.0bin , I am not able to locate mongo.exe file. I am able to see mongod.exe and mongos.exe. Can someone help. Thank you.
I have a scrapping python project which stored pandas data frame in a csv file. I setup docker run mongo but cant figure out how to store the data of csv file in mongodb. Do I have to copy the…
I'm attempting to import a large CSV file into mongodb using mongodb compass. The data originally came from BigQuery via GDELT, then was dumped into 40+csv files. Over half of the files are not able to be imported as they…
db.collection.aggregate([ .... { $group: {_id: "$data.r.id", "col": {$first: "$data.r"}}}, {$project:{"o":{"$objectToArray":"$col"}}}, {$unwind:"$o"}, {$group:{"_id":null, "keys":{$addToSet:"$o.k"}}}, {$project: {"keys":1, "_id": 0}}, {$addFields: {res:{$map:{ input:"$keys", as: "a", in: {"_id":0,"label": "$$a"}}}}}, {$project: {"res":1}} ]) With my MongoDB query, the output is: { "res" : [ {…
I have some problem about connection to my mongoDB with MongoClient. const { MnogoClient , ObjectID} = require('mongodb') const id = new ObjectID() console.log(id) const connectionURL = 'mongodb://127.0.0.1:27017' const databaseName = 'task-manager' MnogoClient.connect(connectionURL , {useNewUrlParser: true}, (error, client)=>{ if(error){ return…
I'm trying by following the docs to register and then login with realm. Unfortunatly I got an error RealmException : non-zero custom status code considered fatal when trying to do : authProvider.registerUser(email, password) or : app.logIn(emailCred); I created a repo…
I am currently trying to find if an array of strings contains a certain string. So far, what I have is: Following.find({ username: username }, { following: { $in: [profileUsername] } }).exec((err, result) => { if (err) { console.log(err); res.json(err);…
I have a sample collection of documents in mongo db like below [{"name":"hans","age":30,"test":"pass","pre":"no","calc":"no"}, {"name":"abs","age":20,"test":"not_pass","pre":"yes","calc":"no"}, {"name":"cdf","age":40,"test":"pass"}, {"name":"cvf","age":30,"test":"not_pass","pre":"no","calc":"yes"}, {"name":"cdf","age":23,"test":"pass"}, {"name":"asd","age":35,"test":"not_pass"}] For some documents the fields pre and calc are not present. I want to add those two fields to the documents which…