title: In Cassandra CQL, is there a way to query the size of a collection column type?
body: <p>We're looking to be able to do something like..</p>
  
  <pre><code>select * from User where rewards.size &gt; 0
  </code></pre>
  
  <p>when the schema is</p>
  
  <pre><code>create table user (
      id uuid primary key,
      network_id uuid,
      rewards set&lt;uuid&gt;,
      name text   
  );
  </code></pre>