title: convert array_agg output to array and not string
body: <p>I'm using <code>array_agg</code> to group values into an array. The output for row is:</p>
  
  <pre><code>row: anonymous { values: '{(1),(2)}' }
  </code></pre>
  
  <p>I'm trying to then loop through the results in Node,</p>
  
  <p><code>row.values.forEach(...</code> but it says <code>values.forEach</code> is not a function, because <code>typeof row.values</code> is String.</p>
  
  <p>I'm using array_agg, so why is the output a string, and how can I convert it to an array?</p>