MongoDB Aggregation Operators

Aggregation operators can be used to process large amounts of data in order to extract useful information and statistical data, which can be used to generate various types of reports, analyses, and visualizations. Aggregation operators can help you group and aggregate data to better understand your data, discover trends and patterns, and make decisions and plans.

  1. $avg

    The MongoDB $avg aggregation pipeline operator is used to calculate the average value of a specific field.

  2. $count

    MongoDB $count operator can be used to calculate the number of documents that meet specific criteria.

  3. $first

    MongoDB $first operator is used to retrieve the value of a specified field from the first document in a group.

  4. $last

    MongoDB $last operator retrieves the value of the last element in an array.

  5. $max

    The $max operator is one of the aggregation pipeline operators in MongoDB that is used to compute the maximum value of a given field.

  6. $min

    The MongoDB $min operator is used in an aggregation pipeline to find the minimum value of a specified field in a collection and return it.

  7. $sortByCount

    The MongoDB $sortByCount operator is used to count and sort a field in all documents in a collection.

  8. $stdDevPop

    $stdDevPop is an operator in the MongoDB aggregation framework used to calculate the population standard deviation of all numerical fields in a collection.

  9. $stdDevSamp

    $stdDevSamp is an aggregation operator in MongoDB used to calculate the sample standard deviation.

  10. $sum

    The MongoDB $sum operator is a very useful aggregation operator that can be used to perform sum operations on specified fields.