title: How to select all rows where mycolumn is an integer value?
body: <p>What would be a good way to select all the rows from a table where a column is an unsigned integer,
  for example here is some pseudo-sql </p>
  
  <pre><code>SELECT * FROM mytable WHERE mycolumn IS UNSIGNED INTEGER
  </code></pre>
  
  <p>So that strings 'abc' and numbers like '12.3' and '12.0' would <strong>not</strong> match, but integers like '123' would. </p>
  
  <p>Where mycolumn is type text/varchar</p>