![]() just curious to learn, how to achieve the same with compass tool as I will be using it frequently. The Aggregation Pipeline Builder in MongoDB Compass lets you create aggregation pipelines to process documents from a collection or view and return computed. I know how to create the query in mongo shell to select distinct fields. I recommend always reading the documentation when working with aggregation stages. I installed only MongoDB Compass and connecting to MongoDB Atlas cluster. This example uses $sum in conjunction with $group to return the sum across a group of documents that are grouped by key. For example, it can be helpful to keep track of where in the array an element existed after unwind by using includeArrayIndex: true. Here are a couple of examples that use syntax 1. In this case, $sum returns the collective sum of all the numeric values that result from applying the specified expression to each document in a group of documents that share the same group by key. The documents that are output from a stage are passed to the next stage. For example, a stage can filter documents, group documents, and calculate values. When used in the $group stage, you can only use the first syntax. An aggregation pipeline consists of one or more stages that process documents: Each stage performs an operation on the input documents. In aggregation pipelines, documents in a collection or view pass through stages where MongoDB Compass processes them into a set of aggregated results. ![]() The first syntax accepts one argument and the second syntax accepts multiple arguments. The Aggregation Pipeline Builder in MongoDB Compass provides the ability to create aggregation pipelines to process data. In MongoDB, the $sum aggregation pipeline operator calculates and returns the sum of numeric values. Working with Data Developer Tools compass JessicaRios (Jessica Rios) October 15, 2020, 7:58pm 1 I am using Compass and I am in the aggregation section.
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