title: MySQL - extract value in brackets [...]
body: <p>I need to extract the values from the string that starts with <code>[</code> and ends with <code>]</code>.</p>
  
  <p>For example: </p>
  
  <pre><code>abcdef [1.2.3.4] ghijkl
  </code></pre>
  
  <p>I need to extract only <code>1.2.3.4</code> from the string above. How do I perform this? Thanks ahead. </p>