title: Can we add primary key to collection datatypes?
body: <p>When I tried to retrieve table using contains keyword it prompts <code>"Cannot use CONTAINS relation on non collection column col1"</code> but when I tried to create table using</p>
  
  <pre><code>CREATE TABLE test (id int,address map&lt;text, int&gt;,mail list&lt;text&gt;,phone set&lt;int&gt;,primary key (id,address,mail,phone));
  </code></pre>
  
  <p>it prompts <code>"Invalid collection type for PRIMARY KEY component phone"</code></p>