| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Dave Cramer <davecramer(at)gmail(dot)com> |
| Cc: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: pg_upgrade does not upgrade pg_stat_statements properly |
| Date: | 2021-07-29 15:10:17 |
| Message-ID: | 20210729151017.GG9600@momjian.us |
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| Lists: | pgsql-hackers |
On Thu, Jul 29, 2021 at 11:01:43AM -0400, Dave Cramer wrote:
>
>
>
>
> OK, I went with this new text. There is confusion over install vs copy,
> and whether this is happening at the operating system level or the SQL
> level. I tried to clarify that, but I am not sure I was successful. I
> also used the word "extension" since this is more common than "custom".
>
>
> Much better, however I'm unclear on whether CREATE EXTENSION is actually
> executed on the upgraded server.
>
> From what I could gather it is not, otherwise the new function definitions
> should have been in place.
> I think what happens is that the function definitions are copied as part of the
> schema and pg_extension is also copied.
Yes, the _effect_ of CREATE EXTENSION in the old cluster is copied to
the new cluster as object definitions. CREATE EXTENSION runs the SQL
files associated with the extension.
--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com
If only the physical world exists, free will is an illusion.
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