Export Collections to BigQuery

指定した Cloud Firestore コレクションから BigQuery に、リアルタイムな増分更新を送信します。


Use this extension to export the documents in a Cloud Firestore collection to BigQuery. Exports are realtime and incremental, so the data in BigQuery is a mirror of your content in Cloud Firestore.

The extension creates and updates a dataset containing the following two BigQuery resources:

  • A table of raw data that stores a full change history of the documents within your collection. This table includes a number of metadata fields so that BigQuery can display the current state of your data. The principle metadata fields are timestamp, document_name, and the operation for the document change.
  • A view which represents the current state of the data within your collection. It also shows a log of the latest operation for each document (CREATE, UPDATE, or IMPORT).

If you create, update, delete, or import a document in the specified collection, this extension sends that update to BigQuery. You can then run queries on this mirrored dataset.

Note that this extension only listens for document changes in the collection, but not changes in any subcollection. You can, though, install additional instances of this extension to specifically listen to a subcollection or other collections in your database. Or if you have the same subcollection across documents in a given collection, you can use {wildcard} notation to listen to all those subcollections (for example: chats/{chatid}/posts).

Additional setup

Before installing this extension, you'll need to:

Backfill your BigQuery dataset

This extension only sends the content of documents that have been changed -- it does not export your full dataset of existing documents into BigQuery. So, to backfill your BigQuery dataset with all the documents in your collection, you can run the import script provided by this extension.

Important: Run the import script over the entire collection after installing this extension, otherwise all writes to your database during the import might be lost.

Generate schema views

After your data is in BigQuery, you can run the schema-views script (provided by this extension) to create views that make it easier to query relevant data. You only need to provide a JSON schema file that describes your data structure, and the schema-views script will create the views.


This extension uses other Firebase or Google Cloud Platform services which may have associated charges:

  • BigQuery (this extension writes to BigQuery with streaming inserts)
  • Cloud Firestore
  • Cloud Functions

When you use Firebase Extensions, you're only charged for the underlying resources that you use. A paid-tier billing plan is only required if the extension uses a service that requires a paid-tier plan, for example calling to a Google Cloud Platform API or making outbound network requests to non-Google services. All Firebase services offer a free tier of usage. Learn more about Firebase billing.


Firebase コンソールの使用

拡張機能のインストールと管理は、Firebase コンソールで行えます。


Firebase CLI の使用

拡張機能のインストールと管理は、Firebase CLI でも行えます。

ステップ 1: 以下の npm コマンドを実行して、CLI をインストールするか、最新バージョンの CLI に更新します。

npm install -g firebase-tools
正常に機能しない場合は、Firebase CLI リファレンスを確認するか、npm のアクセス権を変更してください。

ステップ 2: 以下のコマンドを実行して、この拡張機能をインストールします。

firebase ext:install firestore-bigquery-export --project=projectId_or_alias

Blaze プランへの加入が必要です