rence a table that was dropped
   and recreated between the executions of the two queries.
   The hashing process is also sensitive to differences in
   machine architecture and other facets of the platform.
   Furthermore, it is not safe to assume that <code class="structfield">queryid</code>
   will be stable across major versions of <span class="productname">PostgreSQL</span>.
  </p><p>
   Two servers participating in replication based on physical WAL replay can
   be expected to have identical <code cla