title: Select MIN from VARCHAR (MySQL)
body: <p>I have a varcher column named &quot;prices&quot; where prices are stored in the European format, like:</p>
  <pre><code>10,13
  40,34
  28,23
  </code></pre>
  <p>(I know that it would be better to choose another format instead of varchar, but I have reasons for it)</p>
  <p>I want now to select the cheapest price.</p>
  <p>I tried the following:</p>
  <pre><code>SELECT
      MIN(prices)
  FROM
      rates
  </code></pre>
  <p>It's not working. Any &quot;dirty&quot; trick for me? Thanks!</p>