Firestore update all documents in collections

Question

I have a firestore collections named users, each users have a generated id with a field score :

users 
    0e8X3VFL56rHBxxgkYOW
        score : 4
    3SeDjr         


        

Answer 1

Firestore doesn't have the ability to bulk update documents without knowing their IDs. You will have to somehow know the document ID of each document to update (perform a query, or do batches of queries), and update each one individually.