title: UPDATE sql tables issues
body: <p>i have some issues with this sql </p>
  
  <pre><code>UPDATE `rate` FROM `dv_post` SET `rate`=1 WHERE `id` = 9 
  </code></pre>
  
  <p>The response :    </p>
  
  <blockquote>
    <p>You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near<br>
    'FROM <code>dv_post</code> SET <code>rate</code>=1 WHERE <code>id</code> = 9' at line 2'</p>
  </blockquote>