mongodb Archives - Page 6 of 11

return query based on date

I have a data like this in mongodb { "latitude" : "", "longitude" : "", "course" : "", "battery" : "0", "imei" : ...

May 18, 2022
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MongoDB: Combine data from multiple collections into one..how?

How can I (in MongoDB) combine data from multiple collections into one collection? Can I use map-reduce and if so then how? I ...

May 18, 2022
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Stop Mongoose from creating _id property for sub-document array items

If you have subdocument arrays, Mongoose automatically creates ids for each one. Example: { _id: "mainId" subDocArray:...

May 18, 2022
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How to print out more than 20 items (documents) in MongoDB’s shell?

db.foo.find().limit(300) won’t do it. It still prints out only 20 documents. db.foo.find().toArray() db.foo.find().forEach(printjson) will both print out very expanded view of each document ...

May 17, 2022
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How to paginate with Mongoose in Node.js?

I am writing a webapp with Node.js and mongoose. How can I paginate the results I get from a .find() call? I would ...

May 17, 2022
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Render basic HTML view?

I have a basic node.js app that I am trying to get off the ground using Express framework. I have a views folder ...

May 15, 2022
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E11000 duplicate key error index in mongodb mongoose

Following is my user schema in user.js model – var userSchema = new mongoose.Schema({ local: { name: { type: String }, email : ...

May 15, 2022
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How to analyze disk usage of a Docker container

I can see that Docker takes 12GB of my filesystem: 2.7G /var/lib/docker/vfs/dir 2.7G /var/lib/docker/vfs 2.8G /var/lib/docker/devicemapper/mnt 6.3G /var/lib/docker/devicemapper/devicemapper 9.1G /var/lib/docker/devicemapper 12G /var/lib/docker But, ...

May 15, 2022
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How to select a single field for all documents in a MongoDB collection?

In my MongoDB, I have a student collection with 10 records having fields name and roll. One record of this collection is: { ...

May 15, 2022
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mongodb/mongoose findMany – find all documents with IDs listed in array

I have an array of _ids and I want to get all docs accordingly, what’s the best way to do it ? Something ...

May 14, 2022
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