title: Where can I find a list of all OrientDB SQL projections?
body: <p>I'm looking for documentation about projects in OrientDB SQL syntax. I've seen various examples, but I'd like a comprehensive list.</p>
  
  <p>Examples of projections:</p>
  
  <pre><code>SELECT out('my_edge') FROM Person
  
  SELECT expand(in('my_edge')) FROM Person
  
  SELECT max('my_field') FROM Person
  
  SELECT count(*) FROM Person
  </code></pre>
  
  <p>There are obviously lots of other ones out there, but I'd love it if there were some complete syntax documentation for this somewhere.</p>