title: How to avoid variable substitution in Oracle SQL Developer
body: <p>When I try to execute this statement in Oracle SQL Developer 2.1 a dialog box <em>"Enter Substitution Variable"</em> pops up asking for a replacement value for <em>TOBAGO</em>,</p>
  
  <pre><code>update t set country = 'Trinidad and Tobago' where country = 'trinidad &amp; tobago';
  </code></pre>
  
  <p>How can I avoid this without resorting to <code>chr(38)</code> or <code>u'trinidad \0026 tobago'</code> which both obscure the purpose of the statement?</p>