title: Extract Integer value from string attribute in Mysql
body: <p>I have an attribute in MYSQL table "primaryCamera", which has value as </p>
  
  <pre><code>Camera 8 MP, 3264 x 2448 pixels, Carl Zeiss optics, optical image stabilization, autofocus, dual
  </code></pre>
  
  <p>I want to list mobiles greater than or equal to 8MP, what is exact query in MYSQL which works for me.</p>
  
  <p>Please help me.</p>