title: Aggregate functions in Crystal Reports
body: <p>I have a Crystal Report for which I only have access to edit the .rpt file, I can't edit the data source or the underlying wrapper so I can only make edits to the .rpt file.</p>
  
  <p>Currently, I have data that I need to aggregate (Group by a few columns, with a list aggregate on a number column).</p>
  
  <p>The input data is in XML format, I know the best way to achieve this grouping would be server side when the data is being populated, but I don't have the access to change that.</p>
  
  <p>So I am wondering, is there a simple way to manipulate the input data before crystal starts printing the records?</p>
  
  <p>Thanks for any help.</p>