Re: How to I select value of GUC that has - in its name?

On 2/9/21 7:45 AM, hubert depesz lubaczewski wrote:
> On Tue, Feb 09, 2021 at 07:41:02AM -0800, Adrian Klaver wrote:
>> The only way I found so far is:
>> select setconfig[array_position(setconfig, 'custom.bad-guc=1a')] from
>> pg_db_role_setting where setrole = 'aklaver'::regrole;
> 
> Yeah, but this will require some parsing if I don't know what the value
> is.
> Of course, it's not impossible, I can:
> with x as (
>      select unnest(setconfig) as u
>      from pg_db_role_setting
>      where setrole = 'depesz'::regrole
> )
> select regexp_replace(u, '^[^=]*=', '') from x where u like 'custom.bad-guc=%';
> 
> but I find it curious that I can set the guc using normal-ish SET, but
> can't get it using SHOW or even select current_setting()

Yeah, I think that part is a bug report.

> 
> depesz
> 


-- 
Adrian Klaver
adrian.klaver@aklaver.com