title: MYSQL column type for only positive number bigger or equal to 0?
body: <p>I want to ask to what i must se my MYSQL column type so always the value there will be 0 or greater and never like number <code>-15</code>.</p>
  
  <p>I need it for one my PHP script which is calculating differences and i don't want to get a result in my column smaller then 0.</p>
  
  <p>I want when it calculate in case 20 - 30 to set in my MYSQL column 0 not -10 if you get what i want. </p>
  
  <p>So is there any chance this will be done with MySQL comumn type?</p>
  
  <p>Thanks in advance!</p>