mongoc_aggregate(3) on Linux
The text b9dc6f3644a9, as Debian 11 (Bullseye) shipped it.
Aggregation Framework Examples This document provides a number of practical examples that display the capabilities of the aggregation framework. The Aggregations using the Zip Codes Data Set examples uses a publicly available data set of all zipcodes and populations in the United States. These data are available at: zips.json.