title: Mysql query countdown until date expiration
body: <p>I have this query:</p>
  
  <p>SELECT DATE_FORMAT( <code>expiry_date</code>, '%d.%m.%Y' ) FROM <code>my_subscriptions</code> WHERE <code>user_id</code> = '[user_id]'</p>
  
  <p>which extract expiry date of users subscription plan of my site. Now I would like use another query who count and extract remaining days before reach expiration date. I'm not a sql guru and have poor knowledge about. Any suggestions ?</p>