title: Oracle Database | Calculate Days in between two dates
body: <p>I'm trying to calculate number of days in between to DATES stored in my database, but I was not able to get any data using DATEDIFF or Extract.</p>
  <p>Brief Example:</p>
  <p>TABLE (PROJECT)
  PROJECT START, PROJECT END</p>
  <p>What I'm looking to get is the amount of days each project lasted.</p>
  <p>Any hint will help!</p>