n_random_bytes(count integer) returns bytea
</pre><p>
   Returns <em class="parameter"><code>count</code></em> cryptographically strong random bytes.
   At most 1024 bytes can be extracted at a time.  This is to avoid
   draining the randomness generator pool.
  </p><a id="id-1.11.7.38.11.5" class="indexterm"></a><pre class="synopsis">
gen_random_uuid() returns uuid
</pre><p>
   Returns a version 4 (random) UUID. (Obsolete, this function
   internally calls the <a class="link" href="functions-uuid.html" tit