title: Connect to database PostSQL using ssh tunnel in R
body: <p>Objective is to connect <strong>R</strong> to <strong>PostgreSQL</strong> using an SSH tunnel.</p>
  
  <p>Just had unsuccessful tries with libraries <code>RPostgreSQL</code> and <code>DBI</code>. I'm not finding a way to pass along SSH tunneling parameters (proxy host, proxy user, and private key).</p>
  
  <p>I wonder if there's a way to somehow specify those SSH parameters along in db query string? Maybe another way out?</p>