title: MySQL: bigint Vs int
body: <p>I have been using int(10) and just noticed that Wordpress uses bigint(20) - What is different to use bigint(20) and int(10) for id auto increment? Which one should I use for id column?</p>
  
  <pre><code>`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  </code></pre>
  
  <p>Vs</p>
  
  <pre><code>`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  </code></pre>
  
  <p>Thanks.</p>