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aggregation.txt
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aggregation.txt
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.. _aggregation-reference:
=====================
Aggregation Reference
=====================
.. default-domain:: mongodb
.. contents:: On this page
:local:
:backlinks: none
:depth: 1
:class: singlecol
.. |page-topic| replace:: :atlas:`run aggregation pipelines in the UI </atlas-ui/agg-pipeline>`
.. cta-banner::
:url: https://www.mongodb.com/docs/atlas/atlas-ui/agg-pipeline
:icon: Cloud
.. include:: /includes/fact-atlas-compatible.rst
Aggregation Resources
---------------------
:doc:`/reference/operator/aggregation/interface`
The reference for the data aggregation commands, which provide the
interfaces to MongoDB's aggregation capability.
:doc:`/reference/operator/aggregation-pipeline`
Reference for aggregation pipeline stages. Aggregation pipelines are
made up of an array of stages. Documents pass through each stage in
sequence.
:doc:`/reference/operator/aggregation`
Reference for aggregation pipeline operators. Use operators in stages
to modify documents and perform calculations.
:doc:`/reference/aggregation-variables`
Use of variables in aggregation pipeline expressions.
:doc:`/reference/sql-aggregation-comparison`
An overview common aggregation operations in SQL and MongoDB using
the aggregation pipeline and operators in MongoDB and common SQL
statements.
:doc:`/reference/aggregation-commands-comparison`
A comparison of :dbcommand:`mapReduce` and :dbcommand:`aggregate`
commands.
`Practical MongoDB Aggregations (e-book) <https://www.practical-mongodb-aggregations.com>`__
For more information on aggregations, read the `Practical MongoDB
Aggregations <https://www.practical-mongodb-aggregations.com>`__
e-book.
.. toctree::
:titlesonly:
:hidden:
Commands </reference/operator/aggregation/interface>
Stages </reference/operator/aggregation-pipeline>
Operators </reference/operator/aggregation>
Commands Comparison </reference/aggregation-commands-comparison>
Variables </reference/aggregation-variables>
SQL to Aggregation </reference/sql-aggregation-comparison>
Practical MongoDB Aggregations (e-book) <https://www.practical-mongodb-aggregations.com>