title: Extracting numbers from a string without the following characters in SQL
body: <p>So I have street addresses like the following:</p>
  
  <pre><code>123 Street Ave
  1234 Road St Apt B
  12345 Passage Way 
  </code></pre>
  
  <p>Now, I'm having a hard time extracting just the street numbers without any of the street names.</p>
  
  <p>I just want:</p>
  
  <pre><code>123
  1234
  12345
  </code></pre>