title: A script to test existence of primary keys
body: <p>Trying to figure out a SQL script to test the existence of primary keys in cerain tables.  If the table has no primary key, then the script should output the table name.</p>
  
  <pre><code>Tables to test:
  TableA
  TableB
  TableC
  </code></pre>
  
  <p>After running the script (and lets say TableA and TableC have PKs, but not TableB), then the output would be below:</p>
  
  <pre><code>NoKeys
  TableB
  </code></pre>