title: Laravel 5.3 DB Select with different database
body: <p>I have 3 databases defined in my app (legacy not my design!) and I want to use DB Select to run a raw SQL but not from the primary DB.</p>
  
  <p>What is the syntax for telling </p>
  
  <pre><code> DB::select('SELECT....
  </code></pre>
  
  <p>to use a particular predefined connection?</p>