title: Update the date in the database with +1 month
body: <p>I have a date column in my users what I want to update with a SQL query</p>
  
  <p>With the SQL query I want to add 1 month to date column in my database.</p>
  
  <p>I now have:</p>
  
  <pre><code>UPDATE users SET date=(+ 1 month)
  </code></pre>
  
  <p>When I run this query it is not working. So my question is, how can I make this working?</p>