title: how to get a random set of records from an index with cypher query
body: <p>what's the syntax to get random records from a specific node_auto_index using cypher?</p>
  
  <p>I suppose there is this example</p>
  
  <pre><code>START x=node:node_auto_index("uname:*")  RETURN x SKIP somerandomNumber LIMIT 10;
  </code></pre>
  
  <p>Is there a better way that won't return a contiguous set?</p>