title: MySQL Trigger After Any Changes
body: <p>I am looking for a way to create a trigger after any changes occur in a table on any row or field. </p>
  
  <p>I want for my web app to automatically refresh if they're have been any changes to the data since it was last loaded. For this I need a "modified_on" attribute for a table which will apply to the whole table, not just a row.</p>