I have a MongoDB collection with documents containing an array of subdocuments. For example: { "_id": 1, "addresses": [ { "city": "New York", "...

I am a new developer working with MongoDb Atlas, I am currently working on text searches over a collection with news texts. In this phase I am building the pipelines for those searches, so working ...

I’m working with a MongoDB compound index like this: db.users.createIndex({ gender: 1, city: 1, age: 1 }) Suppose city has only a few possible values, e.g., "Chicago", "LA", "...

https://mongoplayground.net/p/2CHyeuaG0y0 db.test.aggregate([ { $match: { $or: [ { cheese: { "$exists": true } }, { ...

I’m working with a collection where documents contain an array of subdocuments, for example: { "_id": 1, "tasks": [ { "priority": 2, "dueDate": "...

I have a users collection with a compound index: db.users.createIndex({ bin: 1, gender: 1, age: 1, location: 1, // ... other fields }); When I query like this: db.users.find({ bin: X, ...

I am working with MongoDB and have a compound index on a collection, e.g., { a: 1, b: 1 }. I want to understand the performance implications when updating documents with respect to the fields in this ...

index: { "name": "tar", "key": { "tar.a": 1, "tar.b": 1 } tar is an array of subdocuments. query: ...

Given a aggregation pipeline like this, in which I use a $match with { $exists: false } on a indexed field: db.collection.aggregate([ { $match: { myField: { $exists: false } } } ]) ...

I have a MongoDB collection items with the following indexes: db.items.createIndexes([{ team: 1, a: 1 }, { team: 1, b: 1 }]) I inserted some test data like this: db.items.insertMany([ { team: 1, a: &...

I have a MongoDB collection and the following query: { isActive: true, managerId: null, clientId: { $ne: null } } I would like to optimize this query by creating an index. It looks like partial ...

I have a Flask app that queries my self-managed MongoDB. I've created an index on two fields so that I can perform a text search on it. The search is working fine, but it is only matching full words. ...

A TTL index is applied to a mongodb collection. It is instructed to delete documents after expiration if A = true. A document of this collection is currently locked inside a long running transaction. ...

Index not getting applied while $lookup (Customers lookup in my query, _id index is not getting applied) for one of my query but for other query it’s getting applied. Below is the plan details which ...

I would like to know if there is a difference between these two types of index My goal is to create a composite index in the search for these two keys collection.Indexes.CreateOne( new ...