Thread: pgsql: Include GUC's unit, if it has one,in out-of-range error message

pgsql: Include GUC's unit, if it has one,in out-of-range error message

From
Tom Lane
Date:
Include GUC's unit, if it has one, in out-of-range error messages.

This should reduce confusion in cases where we've applied a units
conversion, so that the number being reported (and the quoted range
limits) are in some other units than what the user gave in the
setting we're rejecting.

Some of the changes here assume that float GUCs can have units,
which isn't true just yet, but will be shortly.

Discussion: https://postgr.es/m/3811.1552169665@sss.pgh.pa.us

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/28a65fc3607a0f45c39a9418f747459bb4f1592a

Modified Files
--------------
src/backend/utils/misc/guc.c      | 113 ++++++++++++++++++++++----------------
src/test/regress/expected/guc.out |   2 +-
2 files changed, 66 insertions(+), 49 deletions(-)


Re: pgsql: Include GUC's unit, if it has one, in out-of-range errormessage

From
Michael Paquier
Date:
On Sun, Mar 10, 2019 at 07:18:20PM +0000, Tom Lane wrote:
> Include GUC's unit, if it has one, in out-of-range error messages.
>
> This should reduce confusion in cases where we've applied a units
> conversion, so that the number being reported (and the quoted range
> limits) are in some other units than what the user gave in the
> setting we're rejecting.
>
> Some of the changes here assume that float GUCs can have units,
> which isn't true just yet, but will be shortly.

It does not seem to have cooled down all animals yet, whelk is
still complaining:
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=whelk&dt=2019-03-11%2000%3A41%3A13

-ERROR:  -Infinity is outside the valid range for parameter "geqo_selection_bias" (1.5 .. 2)
+ERROR:  invalid value for parameter "geqo_selection_bias": "-infinity"

It would be nice if we could avoid an alternate output.
--
Michael

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