title: Postgres/ActiveRecord sorting by letters then numbers?
body: <p>I'm trying to sort an ActiveRecord query alphabetically, case-insensitive, but with letters taking precedence over numbers.</p>
  
  <p>So this:</p>
  
  <pre><code>[
    93124, my town,
    springfield,
    hooverville,
    10075, upper east side,
    Austin, TX
  ]
  </code></pre>
  
  <p>becomes:</p>
  
  <pre><code>[
    Austin, TX,
    hooverville,
    springfield,
    10075, upper east side,
    93124, my town
  ]
  </code></pre>
  
  <p>This is really eluding me.</p>