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Online Vs Batch Execution - Functions & Compiled Modules - User Defined Functions Creating user-defined libraries and functions: How to access if a script should be made a function - What are the pros and cons of making a script a function versus just using it as a script and calling it from the driver file?
We have to load the function library first before we are able to make a call out to any of the functions defined in a function library. Using User-defined function is more efficient in the sense that they are compiled and loaded into memory before a function is being called and a function can be used over and again without having to recompile the function library.