Re: [HACKERS] 64-bit queryId?

On 2017-10-03 17:06:20 +0900, Michael Paquier wrote:
> On Tue, Oct 3, 2017 at 3:12 PM, Andres Freund <andres@anarazel.de> wrote:
> > On 2017-10-03 03:07:09 +0300, Alexander Korotkov wrote:
> >> On Tue, Oct 3, 2017 at 12:32 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> >> +1,
> >> I see 3 options there:
> >> 1) Drop high-order bit, as you proposed.
> >> 2) Allow negative queryIds.
> >> 3) Implement unsigned 64-type.
> >
> > 4) use numeric, efficiency when querying is not a significant concern here
> > 5) use a custom type that doesn't support arithmetic, similar to pg_lsn.
> 
> Why not just returning a hexa-like text?

Two reasons: First, it'd look fairly different to before, whereas 4/5
would probably just continue to work fairly transparently in a lot of
cases. Secondly, what's the advantage in doing so over 4)?

Greetings,

Andres Freund


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