FirebaseFirestore Framework Reference

CountAll

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

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

Example usage:

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

  • Initializes a newCountAll aggregation.

    Declaration

    Swift

    publicinit()

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Last updated 2026-01-13 UTC.