title: Replace NOT working!
body: <p>I have column with values that have wrong character <code>?</code>. Now I want to change it to character <code>b</code>. For this I am using this statement:</p>
  
  <pre><code>SELECT REPLACE(name,'?','b') from contacts;
  </code></pre>
  
  <p>But when I do this nothing's happening, it return value with <code>?</code>.</p>
  
  <p>What I am doing wrong? How I can replace this?</p>