title: How to perform this query in oracle sql?
body: <p>Lets say I have the TABLE shown below. Could you please help me find the persons that have the Attribute1 <strong>but not</strong> the Attribute3? </p>
  
  <p><a href="https://i.stack.imgur.com/ST7BG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ST7BG.png" alt="TABLE"></a></p>
  
  <p>Thanks,</p>
  
  <p>Christina</p>