The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/14/sql-createfunction.html
Description:
The page does not mention what is the default behavior whenever a function
is replaced while the same function is being used in another
query/transaction.
Does the query fail? Does the 'CREATE OR REPLACE' operation fail? Does the
query finish before the function is replaced?
As a side note, my interest in this came from our need to use 'C-Language
Functions', aka binary functions, so it would be neat to also add what is
the behavior on those as well, if there's any difference.