title: PERFORM * vs PERFORM 1
body: <p>In need to run a query to see where at least one record exists. So the question "what is more efficient":</p>
  
  <pre><code>PERFORM * FROM table 
  </code></pre>
  
  <p>or</p>
  
  <pre><code>PERFORM 1 FROM table
  </code></pre>
  
  <p>And why?</p>