title: SQL : The name false is not permitted in this context
body: <p>On executing the following SQL query</p>
  
  <pre><code>alter table tablename add columnname boolean not null default false;
  </code></pre>
  
  <p>I got the following error message:</p>
  
  <p><code>The name "false" is not permitted in this context. Valid expressions are constants, constant expressions, and (in some contexts) variables. Column names are not permitted.</code></p>
  
  <p>How should I fix this? Suggestions?</p>