title: Kusto - How to trim set of characters before a condition
body: <p>I'm working on Azure App Insights, how do i Trim a string value ?</p>
  
  <p>For Example: I have the customeDimension value for prop_Message as "Question: This is StackOverflow: Yes"</p>
  
  <p>I want to trim everything before Yes and my result set should be "Yes"</p>
  
  <p>Any suggestion? </p>
  
  <p>I tried Trim() and Split(), Trim() requires a set of predefined string to be replaced and Split() just removes everything on the character count. In my case, the character count differs little bit. </p>