const { Pool } = require('pg');
const pool = new Pool({ connectionString: 'postgres://postgres:csh%402018@localhost:5432/ai_pharmacy' });

pool.query("SELECT id, brand_name FROM products")
  .then(res => {
    console.log('products:', res.rows);
    pool.end();
  })
  .catch(err => {
    console.error(err);
    pool.end();
  });