Re: compute_query_id and pg_stat_statements

st 12. 5. 2021 v 11:39 odesílatel Kyotaro Horiguchi <horikyota.ntt@gmail.com>
napsal:

> At Wed, 12 May 2021 17:30:26 +0800, Julien Rouhaud <rjuju123@gmail.com>
> wrote in
> > On Wed, May 12, 2021 at 10:57:25AM +0200, Pavel Stehule wrote:
> > >
> > > My second proposal can work for your example too. pg_stat_statements
> have
> > > to require any active queryid computing. And when it is not available,
> then
> > > the exception should be raised.
> > >
> > > The custom queryid can return null, and still the queryid will be
> computed.
> > > Maybe the warning can be enough. Just, if somebody use
> pg_stat_statements
> > > function, then enforce the check if queryid is computed
> (compute_query_id
> > > is true || some hook is not null), and if not then raise a warning.
> >
> > Ah I'm sorry I misunderstood your proposal.  Yes, definitely adding a
> warning
> > or an error when executing pg_stat_statements() SRF would help, that's a
> great
> > idea!
> >
> > I'll wait a bit in case someone has any objection, and if not send an
> updated
> > patch!
>
> Isn't there a case where pg_stat_statements uses an alternative
> query-id provider?
>

this check just can check if there is "any" query-id provider. In this
context is not important if it is buildin or external


> regards.
>
> --
> Kyotaro Horiguchi
> NTT Open Source Software Center
>