hapi and mysql on nodejs

Question

When I run the server there are no error. But when I visit the site it starts to give out an error TypeError: Converting circular structure to JSON

my database.js

var mysql      = require('mysql');

var connection = mysql.createConnection({
  host     : 'localhost',
  user     : 'root',
  password : '',
  database : 'test'
});

module.exports = {
  connection: connection
}

My products.js

var db = require('../database');

function getProducts(request) {
    var product = db.connection.query('SELECT * from products', function(err) {
        // connected! (unless `err` is set)
    });

    request.reply(product);
}

I just started with node.

---

update

db.connection.query('SELECT * from products', function(err, results) {
    if (err) throw err;
    console.log(err);

    var products = results;
});

returning null on console.

---

update

var query = db.connection.query('SELECT * from products;', function(error, rows, fields)     {
    console.log(rows);
    var products = rows;
});

it seems like adding ; to the end of the query did it.

---

Another thing is now products is not defined

function getProducts(request) {

    if (request.query.name) {
        request.reply(findProducts(request.query.name));
    }
    else {
        request.reply(products);
    }
}

---

As for the answer of the last question:

var products = query._results;