title: How to call queryAll method
body: <p>I was going through the instructions specified under <a href="http://sqlobject.org/SQLBuilder.html#sql-statements" rel="nofollow noreferrer">SQL statements</a>, and I got stuck at this line:</p>
  
  <pre><code>rows = connection.queryAll(query)
  </code></pre>
  
  <p>From where are we getting this connection object? Because I am sure this is not the object obtained from this statement</p>
  
  <pre><code>connection = connectionForURI(connection_string)
  </code></pre>
  
  <p>I also tried using dbconnection like this:</p>
  
  <pre><code>select = Select(['name', 'AVG(salary)'], staticTables=['employees'], groupBy='name')
  query = dbconnection.sqlrepr(select)
  </code></pre>
  
  <p>But dbconnection doesn't have queryAll method.</p>