_stats</code> role are allowed to see the SQL text and
   <code class="structfield">queryid</code> of queries executed by other users.
   Other users can see the statistics, however, if the view has been installed
   in their database.
  </p><p>
   Plannable queries (that is, <code class="command">SELECT</code>, <code class="command">INSERT</code>,
   <code class="command">UPDATE</code>, <code class="command">DELETE</code>, and <code class="command">MERGE</code>)
   and utility commands are combined into a 