title: How select `Only String` and `Only Int`
body: <p>I have some <code>nvachar</code> data in a my database. </p>
  
  <p>aaaa , bb1b, c+cc , 1234 , dser , 5896</p>
  
  <p>I need to two select for <code>Only String</code> and <code>Only Int</code>. This is mean :</p>
  
  <p>Result of first select be  : <code>aaaa</code> , <code>dser</code> </p>
  
  <p>Result of second select be : <code>1234</code> , <code>5896</code></p>
  
  <p>How?</p>