title: Unsigned field in Amazon Redshift?
body: <p>I was looking for a way to create a table with unsigned integer (I know I will have only positive integers, so why not to increase the range twofold). To create an integer field, I do:</p>
  
  <pre><code>create table funny_table(
      my_field bigint
  );
  </code></pre>
  
  <p>So I thought that using <code>my_field bigint unsigned</code> will solve my problem, but syntax error tells me otherwise. Looking though the <a href="http://docs.aws.amazon.com/redshift/latest/dg/r_Numeric_types201.html" rel="noreferrer">documentation</a> tells nothing about unsigned integers. Is it even possible?</p>