Update a Firestore document using merge (async)

Update a Firestore document using merge (async).

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For detailed documentation that includes this code sample, see the following:

Code sample


To authenticate to Firestore, set up Application Default Credentials. For more information, see Set up authentication for a local development environment.

city_ref = db.collection("cities").document("BJ")

await city_ref.set({"capital": True}, merge=True)

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