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New posts in aggregation-framework

MongoDB Aggregation - $lookup performance

MongoDB document nested document filtering

An aggregation puzzle about mongoDB?

MongoDB mapReduce method unexpected results

Forward $match answer from one collection to another $match in Mongo

MongoDB aggregation to replace array of ObjectIds with actual documents

Mongo Query: how to $lookup with DBRef

How to retrieve all documents where two fields' value are equals with pymongo?

Is it possible to aggregate $$ROOT in mongo db?

Get the 2 alphabetically first documents by type

Slice an array based on matching conditions with $lookup

Lookup only if foreign field is not null in mongoDB

MongoDB: how to get the count of a particular document?

Java/mongodb - How to implement aggregate method to return result as cursor

Get Most Recent Document By Type With Mongo Aggregation Query

Is there anyway to get maximum value in a column using mongoengine?

"populate" a field with a $lookup without overwriting the existing value

Filter Documents by Distance Stored in Document with $near

MongoDB - Use aggregation framework or mapreduce for matching array of strings within documents (profile matching)