Re: DROP EXTENSION

Ok - I understand!

However, could that be stated in the documentation so that is clear?

-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Tuesday, June 21, 2016 2:27 PM
To: Alvaro Herrera
Cc: Michael Paquier; Michelle Schwan; pgsql-docs@postgresql.org
Subject: Re: [DOCS] DROP EXTENSION

Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> Right; mschwan wrote private email to indicate that the function in
> question is:

> CREATE OR REPLACE FUNCTION public.f_unaccent(text)
>   RETURNS text AS
> $$
>   select public.unaccent('public.unaccent', $1) $$
>   LANGUAGE sql IMMUTABLE;

> so when the unaccent extension is dropped, this function remains (of
> course) but it stops working.

Ah, I kind of suspected that: the issue is that we don't analyze function bodies to detect dependencies therein.  In a
perfectworld we would, but there are daunting obstacles in the way. 

            regards, tom lane