Re: Add sub-transaction overflow status in pg_stat_activity

On 12/13/21, 6:30 AM, "Dilip Kumar" <dilipbalaut(at)gmail(dot)com> wrote:
> On Tue, Dec 7, 2021 at 11:11 AM Justin Pryzby <pryzby(at)telsasoft(dot)com> wrote:
>> Since I think this field is usually not interesting to most users of
>> pg_stat_activity, maybe this should instead be implemented as a function like
>> pg_backend_get_subxact_status(pid).
>>
>> People who want to could use it like:
>> SELECT * FROM pg_stat_activity psa, pg_backend_get_subxact_status(pid) sub;
>
> I have provided two function, one for subtransaction counts and other
> whether subtransaction cache is overflowed or not, we can use like
> this, if we think this is better way to do it then we can also add
> another function for the lastOverflowedXid

The general approach looks good to me. I think we could have just one
function for all three values, though.

Nathan