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New posts in aggregation-framework

How to convert ObjectID to String in $lookup (aggregation)

Sorting and ranking documents based on key values?

mongodb multiple aggregations in single operation

Mongodb recursive query

Mongodb Aggregation : How to return only matching elements of an array [duplicate]

using $regex in mongodb aggregation framework in $group

Moving averages with MongoDB's aggregation framework?

Return specific field in aggregate

The difference between $ and $$ in MongoDB

pymongo: remove duplicates (map reduce?)

Mongoose group and count

mongoDB: how to reverse $unwind

Selecting Distinct values from Array in MongoDB

mongoose sum a value across all documents

Fill missing dates in records

Aggregate $lookup does not return elements original array order

Aggregate pipeline throws the error "A pipeline stage specification object must contain exactly one field."

Group by specific element of array with mongo aggregation framework

Mongodb aggregate arguments to $lookup must be strings