title: What ROW_FORMAT is my table?
body: <p>I've discovered that MySQL has <a href="http://dev.mysql.com/doc/refman/5.1/en/data-size.html" rel="noreferrer">multiple row formats</a>, and it's possible to specify this or change it.  Also, the default ROW_FORMAT has apparently changed over time with MySQL versions, which is understandable.</p>
  
  <p>However, I can't find anywhere that says how to find out what the ROW_FORMAT of an existing table is!  My database has been around for years, from older versions of MySQL, and I want to make sure I'm not using a poorly performing ancient disk format.</p>
  
  <p>How do I find out the ROW_FORMAT of a table in MySQL?</p>