Hi hackers, I'm not sure if it's the best list for my question but I have a following problem.
I have an existing DB with lots of data and I need to modify the behavior of one specific built-in function. I can of course create my own function and redefine the behavior but now I need to find every single instance of the old function being used. There is dependency tracking with pg_depend but it doesn't work for built-in functions. I also tried a different approach and tried to create a C-language hook for function call but hooks also don't work for built-in functions. Do you have some advice for me? Thanks.
