It appears that neither pg_get_function_arguments nor pg_get_function_identity_arguments could be used for this. I want to get function argument data types from the catalog by ordinal position, without the argument name.
For example, I want the same information for these 2 functions:
foo(p_1 int, p_2 text)
- {int, text}
foo(int, text)
- {int, text}
Any suggestions as to how to use the catalogs or built-in postgres functions to query this?
