Process Developer supports all XQuery 1.0 constructs and some XQuery 3.0 constructs, such as:
Group by
Try-Catch
Formatting functions for date, dateTime, time, and number
In order to use XQuery 3.0 constructs, be sure to add the following declaration to your files:
xquery version "3.0";
Process Developer uses Saxon as the XQuery processor. If you are in doubt about support for a particular XQuery 3.0 construct, refer to the following at the Saxon Web site, which is at