Oleg Bartunov <obartu...@gmail.com> writes:
> On Tue, Apr 5, 2016 at 9:05 AM, Oleg Bartunov <obartu...@gmail.com> wrote:
>> it's also fixed problem with setting parameter to ''. Before
>> alter system SET shared_preload_libraries = '';
> Ooops, it doesn't :(
> FATAL: could not access file "": No such file or directory
> cat /usr/local/pgsql-head/data/postgresql.auto.conf
> # Do not edit this file manually!
> # It will be overwritten by ALTER SYSTEM command.
> shared_preload_libraries = '""'
I do not think this is a bug, or at least not an ALTER SYSTEM bug.
What you wrote there means a single list entry that is an empty string,
and ALTER SYSTEM reproduced that faithfully.
We do have a shortcoming here, which is that the SET syntax lacks any
way to explicitly set a GUC_LIST_INPUT variable to an empty list.
It's been like that for a long time with few complaints, but maybe
we should do something about it.
regards, tom lane
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