Re: improve CREATE EXTENSION error message - Mailing list pgsql-hackers

From Tom Lane
Subject Re: improve CREATE EXTENSION error message
Date
Msg-id 1433984.1638219747@sss.pgh.pa.us
Whole thread Raw
In response to improve CREATE EXTENSION error message  ("Bossart, Nathan" <bossartn@amazon.com>)
Responses Re: improve CREATE EXTENSION error message
Re: improve CREATE EXTENSION error message
List pgsql-hackers
"Bossart, Nathan" <bossartn@amazon.com> writes:
> Currently, if you attempt to use CREATE EXTENSION for an extension
> that is not installed, you'll see something like the following:

>         postgres=# CREATE EXTENSION does_not_exist;
>         ERROR:  could not open extension control file "/usr/local/pgsql/share/extension/does_not_exist.control": No
suchfile or directory 

> I suspect this ERROR message is confusing for novice users, so perhaps
> we should add a HINT.

If we issue the hint only for errno == ENOENT, I think we could be
less wishy-washy (and if it's not ENOENT, the hint is likely
inappropriate anyway).  I'm thinking something more like

HINT:  This means the extension is not installed on the system.

I'm not quite satisfied with the "on the system" wording, but I'm
not sure of what would be better.  I agree that we can't just say
"is not installed", because people will confuse that with whether
it is installed within the database.

            regards, tom lane



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