mongodb Questions

Mongodb – Is there a way to project max value in a range then finding documents within a new range starting at this max value in just one aggregate?

May 18, 2022
cfrancklin
2 Answers

Given the following data in a Mongo collection: { _id: "1", dateA: ISODate("2021-12-31T00:00.000Z"), dateB: ISODate("2022-01-11T00:00.000Z") }, { _id: "2", dateA: ISODate("2022-01-02T00:00.000Z"), dateB: ISODate("2022-01-08T00:00.000Z") }, { _id: "3", dateA: ISODate("2022-01-03T00:00.000Z"), dateB: ISODate("2022-01-05T00:00.000Z") }, { _id: "4", dateA: ISODate("2022-01-09T00:00.000Z"), dateB: null },…

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MongoDB Aggregate Query to find the documents with missing values

May 18, 2022
AKS
2 Answers

I am having a huge collection of objects where the data is stored for different employees. { "employee": "Joe", "areAllAttributesMatched": false, "characteristics": [ { "step": "A", "name": "house", "score": "1" }, { "step": "B", "name": "car" }, { "step": "C",…

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Mongodb .post unable to add data to the collection

May 18, 2022
User Tester
2 Answers

I am trying to take user input and then add a drug(medicine) to MongoDB. But it is not working and I am getting the error "Add proper parameter first". The user input should be patient name, drug name, dosage, frequency,…

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Mongodb – Version controll for multiple files on an embedded system

May 18, 2022
Dr.Random
2 Answers

I have an esp32-wrover-e ( 16mb flash and 8mb external ram ) I'm coding it with arduino framework. On the esp32, there is a webserver and it has multiple files for login, the main page and things like that. I…

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MongoDB Aggregate – Query to get items that match key in first item of sort

May 18, 2022
saravana priyan
3 Answers

We have the following records in a collection: { "_id" : ObjectId("1"), "date" : ISODate("2017-02-01T00:00:00Z") } { "_id" : ObjectId("2"), "date" : ISODate("2017-02-01T00:00:00Z") } { "_id" : ObjectId("3"), "date" : ISODate("2017-03-03T00:00:00Z") } { "_id" : ObjectId("4"), "date" : ISODate("2017-02-02T00:00:00Z") }…

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What is the best way to store any kind of file in a database using noSQL and MongoDB

May 18, 2022
Lilian Carion
2 Answers

So I'm creating a ticket system, and what I'd like to do is to add any type of file to my tickets and store them in my database. So I was thinking about using a noSQL database just for the…

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Mongodb – How to keep decreasing value in mongo until is 0

May 18, 2022
user7445842547
2 Answers

singleObj = await Objects.findByIdAndUpdate({ _id: req.body.id, }, { $inc: { 'total_obj': -1, 'total_stuff': 1 }, }, { new: true }) The user clicks a button and the value of 'total_obj' gets decreased by one. The value doesn't have to be…

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Prisma Mongodb can't create a user model

May 18, 2022
Jaden derulo
3 Answers

So I am using Prisma for the first time and my provider is mongodb and when I want to create a model it throws me an error Invalid `prisma.user.create()` invocation: Prisma needs to perform transactions, which requires your MongoDB server…

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Mongodb – Aggregation Annotation Not Working It is Returning Empty

May 17, 2022
ricxk
2 Answers

I am trying to make this Aggregation bellow using Spring Java, but it's returning an Empty List on my console. This is working on MongoDB, but not on my spring application. This is my MongoDB Query: db.collection.aggregate([ { $match: {…

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Mongodb – hostname/IP changed for all hosts in sharding with replica set configuration

May 17, 2022
bikash mishra
2 Answers

Here is my mongo cluster (sharding with replicaset) configuration. replica sets: rs0 - IP1, IP2, IP3 || port - 27017 rs1 - IP4, IP5, IP6 || port - 27017 config server replica set - IP7, IP8, IP9 || port -…

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