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MongoDB Query Language (MQL) Aggregation Commands

Aggregation commands process data records and return computed results. They group values from multiple documents, perform operations on the grouped data, and return a single result. Common aggregation tasks include calculating averages, sums, and counts.

Aggregate

The aggregate command is used to process data records and return computed results.

Count

Count command is used to count the number of documents in a collection that match a specified query.

Distinct

The distinct command is used to find the unique values for a specified field across a single collection.