Reference documentation and code samples for the Firestore v1 API class AggregationResult.
The result of a single bucket from a Firestore aggregation query.
The keys of aggregate_fields are the same for all results in an aggregation
query, unlike document queries which can have different fields present for
each result.
The result of the aggregation functions, ex: COUNT(*) AS total_docs.
The key is the [alias][google.firestore.v1.StructuredAggregationQuery.Aggregation.alias]
assigned to the aggregation function on input and the size of this map
equals the number of aggregation functions in the query.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThe latest version of the \u003ccode\u003eAggregationResult\u003c/code\u003e class is 3.10.0, but it has a history of versions going as far back as version 2.3.0.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eAggregationResult\u003c/code\u003e is a class in the Firestore v1 API used to represent the outcome of a single bucket from a Firestore aggregation query.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eAggregationResult\u003c/code\u003e class implements multiple interfaces, including \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e, offering various functionalities.\u003c/p\u003e\n"],["\u003cp\u003eThe class \u003ccode\u003eAggregationResult\u003c/code\u003e has two constructors, one default and another that takes an existing \u003ccode\u003eAggregationResult\u003c/code\u003e object as a parameter for copying.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eAggregateFields\u003c/code\u003e property of the class contains the results of the aggregation functions, such as a count of documents, and uses a MapField to store the data.\u003c/p\u003e\n"]]],[],null,[]]
