title: Rails find_by_sql - Use "?" literally rather than as bind variable?
body: <p>In the below, I want the first <code>?</code> to be used literally, only the second <code>?</code> should be used as the bind variable marker:</p>
  
  <pre><code>Foo.find_by_sql ["select IFNULL(col,'?') from foos where id = ?",1]
  </code></pre>
  
  <p>This errors:</p>
  
  <blockquote>
    <p>wrong number of bind variables (1 for 2)</p>
  </blockquote>
  
  <p>How would I escape the first <code>?</code> so it is treated literally?</p>