Scalar UDF Explicit Registration Syntax

Explicit registration means you need to manually add registration logic code intrusively in Python code, using backend...register or register_from_file to achieve it, where calling equals registering. Explicit registration depends on having already obtained the backend session object before proceeding.

Scenarios recommending explicit registration: If you wish to explicitly control registration timing, allow intrusive addition of registration logic, or require separation of Scalar UDF registration and usage under the same backend connection.

A typical scenario involves one development team being responsible for UDF registration while multiple teams handle UDF usage, with no communication between the Python scripts of the registration and usage teams.