Aggregation Reference
On this page
You can run aggregation pipelines in the UI for deployments hosted in MongoDB Atlas.
Aggregation Resources
- Aggregation Database Commands and Methods
- The reference for the data aggregation commands, which provide the interfaces to MongoDB's aggregation capability.
- Aggregation Stages
- Reference for aggregation pipeline stages. Aggregation pipelines are made up of an array of stages. Documents pass through each stage in sequence.
- Variables in Aggregation Expressions
- Use of variables in aggregation pipeline expressions.
- MongoDB Query Language Reference
- Reference for MQL. Use MQL operators and expressions in aggregations and other MQL queries.
- SQL to Aggregation Mapping Chart
- An overview common aggregation operations in SQL and MongoDB using the aggregation pipeline and operators in MongoDB and common SQL statements.
- Aggregation Commands Comparison
- A comparison of
mapReduceandaggregatecommands. - Practical MongoDB Aggregations (e-book)
- For more information on aggregations, read the Practical MongoDB Aggregations e-book.