title: Fix time issue in oracle
body: <p>Table looks like below:</p>
  <p><a href="https://i.stack.imgur.com/9d76A.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9d76A.png" alt="enter image description here" /></a></p>
  <p>Expected answer below:
  <a href="https://i.stack.imgur.com/66YYf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/66YYf.png" alt="enter image description here" /></a></p>
  <p>Write an oracle query to fix space and return hh:mm format. Consider same time in a same group and return total count</p>