Re: [PROPOSAL] timestamp informations to pg_stat_statements

Peter Geoghegan <pg@heroku.com> writes:
> On Sun, Jul 17, 2016 at 12:22 AM, Jun Cheol Gim <dialogbox@gmail.com> wrote:
>> If we have timestamp of first and last executed, we can easily gather thess
>> informations and there are tons of more use cases.

> -1 from me.

> I think that this is the job of a tool that aggregates things from
> pg_stat_statements. It's unfortunate that there isn't a good
> third-party tool that does that, but there is nothing that prevents
> it.

The concern I've got about this proposal is that the results get very
questionable as soon as we start dropping statement entries for lack
of space.  last_executed would be okay, perhaps, but first_executed
not so much.
        regards, tom lane