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FirebaseFirestore Framework Reference

CountAll

public class CountAll : AggregateFunction, @unchecked Sendable

Represents an aggregation that counts all documents in the input set.

CountAll is used within the aggregate pipeline stage to get the total number of documents that match the query criteria up to that point.

Example usage:

// Count all books in the collection
firestore.pipeline()
  .collection("books")
  .aggregate([
    CountAll().as("totalBooks")
  ])

// Count all sci-fi books published after 1960
firestore.pipeline()
  .collection("books")
  .where(Field("genre").equal("Science Fiction") && Field("published").greaterThan(1960))
  .aggregate([
    CountAll().as("sciFiBooksCount")
  ])

  • Initializes a new CountAll aggregation.

    Declaration

    Swift

    public init()