title: data.table fread function
body: <p>I am using the new <code>data.table:::fread</code> function (fastest read function I've used in R so far) and I got the following (self explanatory) exception:</p>
  
  <pre><code>R) fread(path)
  Erreur dans fread(path) : Coercing integer64 to real needs to be implemented
  </code></pre>
  
  <p>My file (which is a csv separated by tabs) indeed holds big integers like <code>902160000671352000</code>. My question is then, can I tell <code>fread</code> to #NOT# read the second columns (where those monsters int are)</p>