Inserting values from user_metadata to external database


Is it possible to insert values from user_metadata into a database during signup.

Right now I have the below script which will insert the email and password, but I need another field from user_metadata to be inserted too.

function create(user, callback) {
  //this example uses the "pg" library
  //more info here:

  const bcrypt = require('bcrypt');
  const postgres = require('pg');

  const conString = configuration.POSTGRES_URL;
  postgres.connect(conString, function (err, client, done) {
    if (err) return callback(err);

    bcrypt.hash(user.password, 10, function (err, hashedPassword) {
      if (err) return callback(err);
      const query = 'INSERT INTO users(email, password) VALUES ($1, $2)';
      client.query(query, [, hashedPassword], function (err, result) {
        // NOTE: always call `done()` here to close
        // the connection to the database

        return callback(err);