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From: Sami Imseih <[email protected]>
To: Tom Lane <[email protected]>
Cc: Michael Paquier <[email protected]>
Cc: Christoph Berg <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: ma lz <[email protected]>
Subject: Re: query_id: jumble names of temp tables for better pg_stat_statement UX
Date: Mon, 24 Mar 2025 21:38:35 -0500
Message-ID: <CAA5RZ0uNofEXfEfNw3uRN3D3oXkFPQ_s+huLLHMKR_+MCk8RPQ@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
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	<[email protected]>

> select * from foo s1;
> select * from foo s2;

ah, thanks for pointing this out. Not as good of a workaround as
a comment since one must change aliases, but at least there is
a workaround...

> As against this, there is probably also a set of people who would
> *like* identical queries on identically-rowtyped tables in different
> schemas to be merged.  Right now they have no way to make that happen.

I agree that some may want stats to merge for the same tables,
and others may not. I will suggest this with some hesitation, but why not
make this behavior configurable via a GUC?
We recently introduced query_id_squash_values for controlling
the merge of an IN list, maybe this is another queryId behavior we should
provide a configuration for?

--
Sami Imseih
Amazon Web Services (AWS)






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