title: Oracle: Converting string to int
body: <p>In Oracle, I have a table with a column (X) which can have strings like this: </p>
  
  <p>97M<br/> 
  481<br/> 
  101X<br/>
  88<br/>
  21E<br/>
  etc.  </p>
  
  <p>I want to select just those rows where the integral value of x > 90.  In this example, I would expect to get back the rows containing values 97M, 101X and 481.  How can I do this?</p>