Re: [PATCH] Optionally record Plan IDs to track plan changes for a query

> Of course some people may want to keep the current behavior, if they have
> limited number of temp tables or similar, so I had a GUC for that. I don't
> think that the community would really welcome such GUC for core-postgres,
> especially since it wouldn't be pg_stat_statements specific.

FWIW, I think options to tweak queryId computation is something
that should be in core. It was discussed earlier in the context
of IN list merging; the patch for this currently has the guc
for the feature in pg_stat_statements, but there was a discussion
about actually moving this to core [1] Giving the user a way
to control certain behavior about the queryId computation
is a good thing to do in core; especially queryId is no longer
just consumed in pg_stat_statements. Maybe the right answer
is an enum GUC, not sure yet.

Specifically for the use-case you mention, using names vs OIDs in
queryId computation is a valid use case for more than temporary tables,
I can also think of upgrade, dump/restore, logical replication cases which
can then allow for a consistent queryId.

[1] https://www.postgresql.org/message-id/202502111852.btskmr7nhien%40alvherre.pgsql

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Sami