title: How to select Random Sub string,which seperated by coma(",") From a string
body: <p>I have a column which having a list of id's separated by coma, I want to select a random ID from it,</p>
  
  <pre>
      slId  |  adsId
      __________________________
       1    |   1,3,5,6,8,10
       2    |   2,3,4,6,8,9,11
  </pre>
  
  <p>I want to select one Random adsId from above Table.</p>
  
  <p>Expected Result:</p>
  
  <pre>
      slId  |  adsId
      _________________
       1    |   5
       2    |   11
  </pre>
  
  <p>Thanks In Advance.</p>