Cloud Spanner: Node.js Client

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

A comprehensive list of changes in each version may be found inthe CHANGELOG.

• Cloud Spanner Node.js Client API Reference
• Cloud Spanner Documentation
• github.com/googleapis/nodejs-spanner

Read more about the client libraries for Cloud APIs, including the olderGoogle APIs Client Libraries, inClient Libraries Explained.

Table of contents:

• Quickstart
  • Before you begin
  • Installing the client library
  • Using the client library
• Samples
• Versioning
• Contributing
• License

Quickstart

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 theAPI from your local workstation.

Installing the client library

npm install @google-cloud/spanner

Using the client library

// Imports the Google Cloud client libraryconst {Spanner} = require('@google-cloud/spanner');// Creates a clientconst spanner = newSpanner({projectId});// Gets a reference to a Cloud Spanner instance and databaseconst instance = spanner.instance(instanceId);const database = instance.database(databaseId);// The query to executeconst query = {  sql: 'SELECT 1',};// Execute a simple SQL statementconst [rows] = await database.run(query);console.log(`Query: ${rows.length} found.`);rows.forEach(row => console.log(row));

Samples

Samples are in thesamples/ directory. Each sample'sREADME.md has instructions for running its sample.

Sample	Source Code	Try it
Add and drop new database role	source code
Backups-cancel	source code
Copies a source backup	source code
Backups-create-with-encryption-key	source code
Backups-create	source code
Backups-delete	source code
Backups-get-database-operations	source code
Backups-get-operations	source code
Backups-get	source code
Backups-restore-with-encryption-key	source code
Backups-restore	source code
Backups-update	source code
Backups	source code
Batch	source code
CRUD	source code
Creates a new database with a specific default leader	source code
Database-create-with-encryption-key	source code
Database-create-with-version-retention-period	source code
Gets the schema definition of an existing database	source code
Gets the default leader option of an existing database	source code
Updates the default leader of an existing database	source code
Updates a Cloud Spanner Database.	source code
Datatypes	source code
Runs an execute sql request with directed read options	source code
Delete using DML returning.	source code
Insert using DML returning.	source code
Update using DML returning.	source code
DML	source code
Enable fine grained access control	source code
Get-commit-stats	source code
List database roles	source code
Gets the instance config metadata for the configuration nam6	source code
Creates a new value-storing index	source code
Creates a new index	source code
Executes a read-only SQL query using an existing index.	source code
Reads data using an existing storing index.	source code
Read data using an existing index.	source code
Indexing	source code
Creates a user-managed instance configuration.	source code
Deletes a user-managed instance configuration.	source code
Lists the instance configuration operations.	source code
Updates a user-managed instance configuration.	source code
Instance-with-processing-units	source code
Instance	source code
Json-add-column	source code
Json-query-parameter	source code
Json-update-data	source code
Lists all databases on the selected instance	source code
Lists all the available instance configs for the selected project.	source code
Numeric-add-column	source code
Numeric-query-parameter	source code
Numeric-update-data	source code
Adds a column to an existing table in a Spanner PostgreSQL database.	source code
Showcase the rules for case-sensitivity and case folding for a Spanner PostgreSQL database.	source code
Creates a PostgreSQL Database.	source code
Use cast operator to cast from one data type to another in a Spanner PostgreSQL database.	source code
Execute a batch of DML statements on a Spanner PostgreSQL database.	source code
Updates data in a table in a Spanner PostgreSQL database.	source code
Execute a Partitioned DML on a Spanner PostgreSQL database.	source code
Delete using DML returning on a Spanner PostgreSQL database.	source code
Insert using DML returning on a Spanner PostgreSQL database.	source code
Update using DML returning on a Spanner PostgreSQL database.	source code
Execute a DML statement with parameters on a Spanner PostgreSQL database.	source code
Calls a server side function on a Spanner PostgreSQL database.	source code
Creates a new storing index in a Spanner PostgreSQL database.	source code
Created interleaved table hierarchy using PostgreSQL dialect.	source code
Showcase how add a jsonb column in a PostgreSQL table.	source code
Showcase how query data to a jsonb column in a PostgreSQL table.	source code
Showcase how update data to a jsonb column in a PostgreSQL table.	source code
Showcase how to work with the PostgreSQL NUMERIC/DECIMAL data type on a Spanner PostgreSQL database.	source code
Showcases how a Spanner PostgreSQL database orders null values in a query.	source code
Execute a query with parameters on a Spanner PostgreSQL database.	source code
Query the information schema metadata in a Spanner PostgreSQL database.	source code
Alters a sequence in a PostgreSQL database.	source code
Creates sequence in PostgreSQL database.	source code
Drops a sequence in PostgreSQL database.	source code
Queryoptions	source code
Quickstart	source code
Read data with database role	source code
Sets a request tag for a single query	source code
Run Batch update with RPC priority	source code
Run partitioned update with RPC priority	source code
Create partitions with RPC priority	source code
Read data with RPC Priority	source code
Query data with RPC Priority	source code
Run transaction with RPC priority	source code
Schema	source code
Alters a sequence in a GoogleSQL database.	source code
Creates sequence in GoogleSQL database.	source code
Drops a sequence in GoogleSQL database.	source code
Struct	source code
Alters a table with foreign key delete cascade action	source code
Creates a table with foreign key delete cascade action	source code
Drops a foreign key constraint with delete cascade action	source code
Timestamp	source code
Executes a read/write transaction with transaction and request tags	source code
Transaction	source code

TheCloud Spanner Node.js Client API Reference documentationalso contains samples.

Supported Node.js Versions

Our client libraries follow theNode.js release schedule.Libraries are compatible with all currentactive andmaintenance versions ofNode.js.If you are using an end-of-life version of Node.js, we recommend that you updateas soon as possible to an actively supported LTS version.

Google's client libraries support legacy versions of Node.js runtimes on abest-efforts basis with the following warnings:

• Legacy versions are not tested in continuous integration.
• Some security patches and features cannot be backported.
• Dependencies cannot be kept up-to-date.

Client libraries targeting some end-of-life versions of Node.js are available, andcan be installed through npmdist-tags.The dist-tags follow the naming conventionlegacy-(version).For example,npm install @google-cloud/spanner@legacy-8 installs client librariesfor versions compatible with Node.js 8.

Versioning

This library followsSemantic Versioning.

This library is considered to bestable. The code surface will not change in backwards-incompatible waysunless absolutely necessary (e.g. because of critical security issues) or withan extensive deprecation period. Issues and requests againststable librariesare addressed with the highest priority.

More Information:Google Cloud Platform Launch Stages

Contributing

Contributions welcome! See theContributing Guide.

Please note that thisREADME.md, thesamples/README.md,and a variety of configuration files in this repository (including.nycrc andtsconfig.json)are generated from a central template. To edit one of these files, make an editto its templates indirectory.

License

Apache Version 2.0

SeeLICENSE