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Cloud Spanner: Node.js Client

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Cloud Spanner is a fully managed, mission-critical, relational database service that offers transactional consistency at global scale, schemas, SQL (ANSI 2011 with extensions), and automatic, synchronous replication for high availability.

Read more about the client libraries for Cloud APIs, including the older Google APIs Client Libraries, in Client Libraries Explained.

Table of contents:


Before you begin

  1. Select or create a Cloud Platform project.
  2. Enable billing for your project.
  3. Enable the Cloud Spanner API.
  4. Set up authentication with a service account so you can access the API from your local workstation.

Installing the client library

npm install @google-cloud/spanner

Using the client library

  // Imports the Google Cloud client library
  const {Spanner} = require('@google-cloud/spanner');

  // Creates a client
  const spanner = new Spanner({projectId});

  // Gets a reference to a Cloud Spanner instance and database
  const instance = spanner.instance(instanceId);
  const database = instance.database(databaseId);

  // The query to execute
  const query = {
    sql: 'SELECT 1',

  // Execute a simple SQL statement
  const [rows] = await;
  console.log(`Query: ${rows.length} found.`);
  rows.forEach(row => console.log(row));


Samples are in the samples/ directory. The samples' has instructions for running the samples.

Sample Source Code Try it
Batch source code Open in Cloud Shell
CRUD source code Open in Cloud Shell
Datatypes source code Open in Cloud Shell
DML source code Open in Cloud Shell
Indexing source code Open in Cloud Shell
Quickstart source code Open in Cloud Shell
Schema source code Open in Cloud Shell
Struct source code Open in Cloud Shell
Timestamp source code Open in Cloud Shell
Transaction source code Open in Cloud Shell

The Cloud Spanner Node.js Client API Reference documentation also contains samples.


This library follows Semantic Versioning.

This library is considered to be General Availability (GA). This means it is stable; the code surface will not change in backwards-incompatible ways unless absolutely necessary (e.g. because of critical security issues) or with an extensive deprecation period. Issues and requests against GA libraries are addressed with the highest priority.

More Information: Google Cloud Platform Launch Stages


Contributions welcome! See the Contributing Guide.


Apache Version 2.0