title: Update query not working in mysql workbench
body: <p>I have a MySql query, which is given below:</p>
  
  <pre><code>UPDATE signup SET lastname='Lastname', password='123'
  WHERE firstname='Firstname';
  </code></pre>
  
  <p>I am using MySql Workbench to execute the query.</p>
  
  <p>But it's not updating the row and shows this error: </p>
  
  <blockquote>
    <p>You are using safe update mode and you tried to update a table without
    a WHERE that uses a KEY column To disable safe mode, toggle the option
    in Preferences -> SQL Editor and reconnect.</p>
  </blockquote>