title: String concatenate not working because of null
body: <p>I am attempting to add the previous value of a column to another string but I fear because it is null.</p>
  
  <pre><code>async def set_info_id(message_id, server_id):
      message_id = str(message_id) + '.'
      async with aiosqlite.connect('database/tickets.db') as db:
          sql = f'UPDATE servers SET info_message_id = info_message_id || {message_id} WHERE serverid = {server_id}'
          await db.execute(sql,)
          await db.commit()
  </code></pre>
  
  <p>That is the code I am using. Is there any way for concatenate to work when it is null to begin with?</p>