Alvaro Herrera <alvhe...@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