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@azure/cosmos

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@azure/cosmos

Azure Cosmos DB Service Node.js SDK for SQL API

  • 3.0.0-16
  • npm
  • Socket score

Version published
Weekly downloads
587K
increased by34.29%
Maintainers
2
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What is @azure/cosmos?

@azure/cosmos is an npm package that provides a client library for interacting with Azure Cosmos DB, a globally distributed, multi-model database service. The package allows developers to perform various database operations such as creating, reading, updating, and deleting databases, containers, and items. It also supports querying data using SQL-like syntax and managing throughput and indexing policies.

What are @azure/cosmos's main functionalities?

Create a Database

This feature allows you to create a new database in Azure Cosmos DB if it does not already exist. The code sample demonstrates how to initialize the CosmosClient and create a database named 'sample-database'.

const { CosmosClient } = require('@azure/cosmos');
const endpoint = 'your-endpoint';
const key = 'your-key';
const client = new CosmosClient({ endpoint, key });
async function createDatabase() {
  const { database } = await client.databases.createIfNotExists({ id: 'sample-database' });
  console.log(`Created database: ${database.id}`);
}
createDatabase().catch(console.error);

Create a Container

This feature allows you to create a new container within a specified database in Azure Cosmos DB. The code sample demonstrates how to create a container named 'sample-container' with a specified partition key.

const { CosmosClient } = require('@azure/cosmos');
const endpoint = 'your-endpoint';
const key = 'your-key';
const client = new CosmosClient({ endpoint, key });
async function createContainer() {
  const database = client.database('sample-database');
  const { container } = await database.containers.createIfNotExists({ id: 'sample-container', partitionKey: { kind: 'Hash', paths: ['/partitionKey'] } });
  console.log(`Created container: ${container.id}`);
}
createContainer().catch(console.error);

Insert an Item

This feature allows you to insert a new item into a specified container in Azure Cosmos DB. The code sample demonstrates how to insert an item with an id, partition key, and name into the 'sample-container'.

const { CosmosClient } = require('@azure/cosmos');
const endpoint = 'your-endpoint';
const key = 'your-key';
const client = new CosmosClient({ endpoint, key });
async function insertItem() {
  const container = client.database('sample-database').container('sample-container');
  const item = { id: '1', partitionKey: 'partition1', name: 'Sample Item' };
  const { resource } = await container.items.create(item);
  console.log(`Inserted item: ${resource.id}`);
}
insertItem().catch(console.error);

Query Items

This feature allows you to query items in a specified container using SQL-like syntax. The code sample demonstrates how to query items with a specific partition key from the 'sample-container'.

const { CosmosClient } = require('@azure/cosmos');
const endpoint = 'your-endpoint';
const key = 'your-key';
const client = new CosmosClient({ endpoint, key });
async function queryItems() {
  const container = client.database('sample-database').container('sample-container');
  const querySpec = {
    query: 'SELECT * FROM c WHERE c.partitionKey = @partitionKey',
    parameters: [{ name: '@partitionKey', value: 'partition1' }]
  };
  const { resources: items } = await container.items.query(querySpec).fetchAll();
  items.forEach(item => console.log(`Queried item: ${item.id}`));
}
queryItems().catch(console.error);

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Package last updated on 21 May 2019

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