title: How to get non-numeric entries in a column of a database
body: <p>I have customer database that we use for auto-charges.  It would appear that the CC expiration field has a couple records with invalid entries for expiration date... for example non-numeric.  Is there a way to search for entries with a NON-Numeric value? Below is the start of how I would assume the query would look...</p>
  
  <pre><code>select *
  from customers
  where ccexperiation = non numeric
  </code></pre>
  
  <p>Thanks.</p>