title: MySQL - ENUM - Good Idea for ISO 3166-1 Country Codes?
body: <p>I have a MySQL database table for tagging items in the database with 2-digit (ISO 3166-1) country codes (e.g. United States = US).</p>
  
  <p>I am thinking of using an ENUM for the country codes tag column since country codes don't change that much and there's about ~200 or so of them.  Plus, this table could end up with a lot of rows so I figure using an ENUM will help it operate efficiently.</p>
  
  <p>I've heard of people using ENUM with country codes in other situations on SO, but I am not sure if it is reasonable to do so when using MySQL.  </p>
  
  <p>What do you think -- is using an ENUM for 2-digit country codes in MySQL a good idea in my case?  Or will I regret this decision?</p>
  
  <p>I'm using MySQL 5.6 and PHP 5.5.</p>