title: Mysql From enum to tinyint problems
body: <p>I've got a table with</p>
  
  <pre><code>`terms_of_payment` enum('0','1') NOT NULL DEFAULT '0' COMMENT ''
  </code></pre>
  
  <p>I run</p>
  
  <pre><code>ALTER TABLE `customer` 
  CHANGE `terms_of_payment` `terms_of_payment` TINYINT( 1 ) 
       NOT NULL DEFAULT 0 COMMENT '';
  </code></pre>
  
  <p>and I found all my customers (with '0' value) set to 1 when I'm waiting 0</p>
  
  <p>Could you explain me, what's the trouble, please ?</p>
  
  <p>Bye</p>