Developing for Dynamics GP has a nice look at How to work with a passed anonymous table without changing table buffer contents. If you don’t understand that don’t worry, you just don’t speak developer.
Dex – How to work with a passed anonymous table without changing table buffer contents
SQL & DataTips & Hidden Features
Archived post from 2010. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.