FWIW, user-defined functions as such and the ability to pass composite data types by value are part of our vision but haven't been a priority to implement. In

FWIW, user-defined functions as such and the ability to pass composite data types by value are part of our vision but haven't been a priority to implement. In the meantime, a formula can be mapped over a set with a computed field (you only really need a user-defined function when you need the same logic at two different places in the schema), and the typical use cases for relations are also accommodated by our existing features.