title: How to quickly checksum a MySQL InnoDB table with millions of records
body: <p>I have InnoDB based tables that I can checksum with:</p>
  
  <pre><code>checksum table _table_name_
  </code></pre>
  
  <p>That is slow in case millions of records reside in the table. I wonder if there is any way to recognize, whether a table was altered or not?</p>
  
  <p>I needed something that is fast and cheap to request, and changes every time a change is made to any of the records of a table. I do not find anything for InnoDB tables. Is there something?</p>
  
  <p>Regards
  Felix</p>