Query HarperDB Data as a MySQL Database in Node.js

Ready to get started?

Learn more or sign up for a free trial:

CData Connect



Execute MySQL queries against HarperDB data from Node.js.

You can use CData Connect Cloud to query HarperDB data through a MySQL interface. Follow the procedure below to create a virtual database for HarperDB in Connect Cloud and start querying using Node.js.

CData Connect Cloud provides a pure MySQL, cloud-to-cloud interface for HarperDB, allowing you to easily query live HarperDB data in Node.js — without replicating the data to a natively supported database. As you query data in Node.js, CData Connect Cloud pushes all supported SQL operations (filters, JOINs, etc) directly to HarperDB, leveraging server-side processing to quickly return HarperDB data.

Create a Virtual MySQL Database for HarperDB Data

CData Connect Cloud uses a straightforward, point-and-click interface to connect to data sources and generate APIs.

  1. Login to Connect Cloud and click Databases.
  2. Select "HarperDB" from Available Data Sources.
  3. Enter the necessary authentication properties to connect to HarperDB.

    Set the Server, User, and Password connection properties to connect to HarperDB. Set UseSSL to secure connections with TLS/SSL.

  4. Click Test Database.
  5. Click Privileges -> Add and add the new user (or an existing user) with the appropriate permissions.

With the virtual database created, you are ready to connect to HarperDB data from any MySQL client.

Query HarperDB from Node.js

The following example shows how to define a connection and execute queries to HarperDB with the MySQL module. You will need the following information:

  • Host name, or address, and port: The address of your instance of the Connect Cloud (myinstance.cdatacloud.net) and the port (3306)
  • Username and password: The username and password of a user you authorized on Connect Cloud
  • Database name: The database you configured for HarperDB (harperdbdb)

Connect to HarperDB data and start executing queries with the code below:

var mysql      = require('mysql');
var fs         = require('fs');
var connection = mysql.createConnection({
  host     : 'myinstance.cdatacloud.net',
  database : 'harperdbdb',
  port	   : '3306',
  user     : 'admin',
  password : 'password',
  ssl      : {
    ca : fs.readFileSync('C:/certs/myCA.pem')
  }
});
connection.connect();
connection.query('SELECT * FROM Customers', function(err, rows, fields) {
  if (err) throw err;
  console.log(rows);
});

connection.end();