Mongodb
MongoDB is a scalable, high-performance, open source, document-oriented NoSQL database. It supports a large number of languages and application development platforms. Questions about server administration can be asked on http://dba.stackexchange.com.
49
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6
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2.5K
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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"
54
votes
22
answers
610
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Avoid "current URL string parser is deprecated" warning by setting useNewUrlParser to true
I have a database wrapper class that establishes a connection to some MongoDB instance: async connect(connect
55
votes
30
answers
984
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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 w
62
votes
22
answers
3K
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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 col
57
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7
answers
3.1K
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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() d
62
votes
30
answers
3K
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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: { na
51
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8
answers
1.5K
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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
47
votes
8
answers
2.7K
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Ways to implement data versioning in MongoDB
Can you share your thoughts how would you implement data versioning in MongoDB. (I've asked similar quest
59
votes
12
answers
817
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How do I manage MongoDB connections in a Node.js web application?
I'm using the node-mongodb-native driver with MongoDB to write a website. I have some questions about ho
57
votes
12
answers
3K
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How do I search for an object by its ObjectId in the mongo console?
I've found this question answered for C# and Perl, but not in the native interface. I thought this would
51
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11
answers
425
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Mongoose: findOneAndUpdate doesn't return updated document
Below is my code var mongoose = require('mongoose'); mongoose.connect('mongodb://localhost/tes
54
votes
22
answers
936
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Get names of all keys in the collection
I'd like to get the names of all the keys in a MongoDB collection. For example, from this: db.things.in
57
votes
24
answers
2.8K
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MongoDB: Is it possible to make a case-insensitive query?
Example: > db.stuff.save({"foo":"bar"}); > db.stuff.find({"foo":"bar"}).count(); 1 > db.stuff.find(
66
votes
8
answers
777
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MySQL vs MongoDB 1000 reads
I have been very excited about MongoDb and have been testing it lately. I had a table called posts in MySQL wi
54
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28
answers
1K
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Random record from MongoDB
I am looking to get a random record from a huge collection (100 million records). What is the fastest and most
57
votes
7
answers
450
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What is the "__v" field in Mongoose
I'm using Mongoose version 3 with MongoDB version 2.2. I've noticed a __v field has started appearin
59
votes
30
answers
1.8K
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How to export all collections in MongoDB?
I want to export all collections in MongoDB by the command: mongoexport -d dbname -o Mongo.json The resul
51
votes
15
answers
1.5K
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How to remove a field completely from a MongoDB document?
{ name: 'book', tags: { words: ['abc','123'], lat: 33,
61
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6
answers
1.8K
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Add new field to every document in a MongoDB collection
How can I add a new field to every document in an existent collection? I know how to update an existing docum
56
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18
answers
1.2K
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How to secure MongoDB with username and password
I want to set up user name & password authentication for my MongoDB instance, so that any remote access wi
