Re: Feature improvement: can we add queryId for pg_catalog.pg_stat_activity view?

Alvaro Herrera <alvherre@alvh.no-ip.org> writes:
> In this case, I suppose using pg_stat_statement would require to have it
> enabled, and it'd just not collect anything if disabled.

Alternatively, pg_stat_statement might be able to force it on
(applying a non-overridable PGC_INTERNAL-level setting) on load?
Not sure if that'd be desirable or not.

If the behavior of pg_stat_statement is to do nothing when it
sees a query without the ID calculated (which I guess it'd have to)
then there's a potential security issue if the GUC is USERSET level:
a user could hide her queries from pg_stat_statement by turning the
GUC off.  So this line of thought suggests the GUC needs to be at
least SUSET, and maybe higher ... doesn't pg_stat_statement need it
to have the same value cluster-wide?

            regards, tom lane