Connect to the Aiven for ClickHouse® service with Node.js#

Learn how to connect to your Aiven for ClickHouse® service with Node.js using the official Node.js client for connecting to ClickHouse and the HTTPS port.

Pre-requisites#

Node.js in your environment
Node.js client for connecting to ClickHouse

Tip

You can install the Node.js client for connecting to ClickHouse using

npm i @clickhouse/client

Identify connection information#

To run the code for connecting to your service, first identify values of the following variables:

Variable	Description
`CLICKHOUSE_HOST`	`https://HOST:HTTPS_PORT`, where `Host` and `Port` for the ClickHouse connection are available in the Aiven console: Service Overview > Connection information > ClickHouse HTTPS & JDBC
`CLICKHOUSE_USER`	`User` for the ClickHouse connection available in the Aiven console: Service Overview > Connection information > ClickHouse HTTPS & JDBC
`CLICKHOUSE_PASSWORD`	`Password` for the ClickHouse connection available in the Aiven console: Service Overview > Connection information > ClickHouse HTTPS & JDBC

Connect to the service#

Replace the placeholders in the code with meaningful information on your service connection and run the code.

import { createClient } from '@clickhouse/client'
const client = createClient({
    host: "CLICKHOUSE_HOST",
    username: "CLICKHOUSE_USER",
    password: "CLICKHOUSE_PASSWORD",
    database: "default",
})
const response = await client.query({
    query : "SELECT 1",
    format: "JSONEachRow",
    wait_end_of_query: 1,
})
const data = await response.json()
console.log(data)

Expected result

Now you have your service connection set up and you can proceed to :doc: uploading data into your database <load-dataset>.