title: SQL - Select null as FIELDNAME?
body: <p>I have come across some code that says</p>
  
  <pre><code>select null as UnitCost,
  null as MarkUp
  </code></pre>
  
  <p>What exactly is this doing? Is it getting the field names unitcost and markup?</p>
  
  <p>Why would you use "select null as..."?</p>
  
  <p>New to this sorry.</p>
  
  <p>Thanks. </p>