Have you used the PostgreSQL database in your projects?

Yes, PostgreSQL is frequently used in Node.js projects due to its reliability, support for complex queries, and extensibility.

For working with PostgreSQL in Node.js, libraries such as pg (node-postgres) are commonly used. They allow executing SQL queries, managing connections, and handling transactions.

Example of connection and query:

const { Client } = require('pg');

async function fetchUsers() {
  const client = new Client({
    user: 'user',
    host: 'localhost',
    database: 'mydb',
    password: 'password',
    port: 5432,
  });

  await client.connect();
  const res = await client.query('SELECT * FROM users');
  console.log(res.rows);
  await client.end();
}

fetchUsers();

PostgreSQL is well-suited for projects where data integrity, complex relationships, and scalability are important.