Re: Add new error_action COPY ON_ERROR "log"

On Thu, Mar 28, 2024 at 2:49 AM Bharath Rupireddy
<bharath(dot)rupireddyforpostgres(at)gmail(dot)com> wrote:
>
> On Wed, Mar 27, 2024 at 7:42 AM Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
> >
> > I think that there are two options to handle it:
> >
> > 1. change COPY grammar to accept DEFAULT as an option value.
> > 2. change tab-completion to complement 'DEFAULT' instead of DEFAULT,
> > and update the doc too.
> >
> > As for the documentation, we can add single-quotes as follows:
> >
> > ENCODING '<replaceable class="parameter">encoding_name</replaceable>'
> > + LOG_VERBOSITY [ '<replaceable class="parameter">mode</replaceable>' ]
> >
> > I thought the option (2) is better but there seems no precedent of
> > complementing a single-quoted string other than file names. So the
> > option (1) could be clearer.
> >
> > What do you think?
>
> There is another option to change log_verbosity to {none, verbose} or
> {none, skip_row_info} (discuseed here
> https://www.postgresql.org/message-id/Zelrqq-pkfkvsjPn%40paquier.xyz
> that we might extend this option to other use-cases in future). I tend
> to agree with you to support log_verbose to be set to default without
> quotes just to be consistent with other commands that allow that [1].
> And, thanks for quickly identifying where to change in the gram.y.
> With that change, now I have changed all the new tests added to use
> log_verbosity default without quotes.
>
> FWIW, a recent commit [2] did the same. Therefore, I don't see a
> problem supporting it that way for COPY log_verbosity.
>
> Please find the attached v13 patch with the change.

Thank you for updating the patch quickly, and sharing the reference.

I think {default, verbose} is a good start and more consistent with
other similar features. We can add other modes later.

Regarding the syntax change, since copy_generic_opt_arg rule is only
for COPY option syntax, the change doesn't affect other syntaxes. I've
confirmed the tab-completion works fine.

I'll push the patch, barring any objections.

Regards,

--
Masahiko Sawada
Amazon Web Services: https://aws.amazon.com