Обсуждение: Finding every use of a built-in function

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.

> plpgsq_check can show dependencies https://github.com/okbob/plpgsql_check#dependency-list

That's not exactly what I was looking for, but it's a useful tool that could help me anyway. Thanks!