title: What is the point using "AS" keyword in SQL when aliasing can be done without it?
body: <ol>
  <li>Select salary*12 as "Annual Salary" from Employee; </li>
  <li>Select salary*12 "Annual Salary" from Employee;</li>
  </ol>
  
  <p>Both queries will give the same result, would "AS" make some difference? if yes, what it is? if no, then what is point using it?</p>