How to connect to Microsoft Fabric Lakehouse from Node.js using AAD Service Principal (like pyodbc in Python)?

Question

How to connect to Microsoft Fabric Lakehouse from Node.js using AAD Service Principal (like pyodbc in Python)?

Tejesh Reddy 5

Hi Team,

I am trying to connect to a Microsoft Fabric Lakehouse (via SQL endpoint) using a Node.js application, similar to how it's done in Python using pyodbc and an Azure AD service principal.

In Python, I’m able to connect like this:

import logging

 import urllib.parse from sqlalchemy 

import create_engine, text

 import pandas as pd

odbc_str = ( f"Driver={DRIVER};" f"Server=tcp:{SERVER},1433;" f"Database={DATABASE};" f"UID={CLIENT_ID}@{TENANT_ID};" f"PWD={CLIENT_SECRET};" "Authentication=ActiveDirectoryServicePrincipal;" ) conn_url = "mssql+pyodbc:///?odbc_connect=" + urllib.parse.quote_plus(odbc_str) print(f"Connecting with URL: {conn_url}")

I want to do the same in Node.js, but the odbc package in Node doesn't accept Authentication=ActiveDirectoryServicePrincipal in the connection string.

My Questions:

What is the recommended method to connect to Microsoft Fabric Lakehouse using Node.js + ODBC + AAD Service Principal?

Can Microsoft provide an updated example for Node.js or JavaScript similar to the working Python version?

If not possible via Node ODBC, is there a REST API or SQL proxy endpoint that can be called with a bearer token (access_token) from Node.js?

2 answers

Your answer

Answer 1

Hi there - I struggled with this using the mssql and tedious packages, tried using the optional msnodesqlv8 package with mssql, pored through debug logs and the mssql/tedious packages themselves, and am thoroughly convinced that any current solution cannot rely on those packages. However, here is a solution using the msnodesqlv8 package and the latest ODBC driver 18 for SQL Server without tedious or mssql.


const sql = require('msnodesqlv8');

// Connection string for Azure SQL (Lakehouse)
const connectionString = `
  Driver={ODBC Driver 18 for SQL Server};
  Server=<your-endpoint.datawarehouse.fabric.microsoft.com>;
  Database=<your-database-name>;
  Authentication=ActiveDirectoryServicePrincipal;
  UID=<your-app-registration-id>@<your-tenant-id>;
  PWD=<your-app-registration-secret>;
`;

const query = 'SELECT TOP 10 * FROM sys.tables';

sql.open(connectionString, (err, conn) => {
  if (err) {
    console.error('Connection error:', err);
    return;
  }
  conn.query(query, (err, rows) => {
    if (err) {
      console.error('Query error:', err);
    } else {
      console.log('Query results:', rows);
    }
    conn.close();
  });
});

Nathan Harrower 0 Reputation points

2025-10-29T06:07:27.92+00:00

Thank you for posting this, it really helped me.

Answer 2

Dominic Dreier 0

Hey there,

i am having the same problem - more informations would be awesome!

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How to connect to Microsoft Fabric Lakehouse from Node.js using AAD Service Principal (like pyodbc in Python)?

2 answers

Your answer