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From: Alexander Lakhin <[email protected]>
To: Robert Haas <[email protected]>
To: Tom Lane <[email protected]>
Cc: Lukas Fittl <[email protected]>
Cc: Andrei Lepikhov <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Subject: Re: pg_plan_advice
Date: Sun, 5 Apr 2026 11:00:00 +0300
Message-ID: <[email protected]> (raw)
In-Reply-To: <CA+TgmoaPgXYYEivQWxyVV=eYhN+T9JAgS9Xe4m7g9wVitVPF8g@mail.gmail.com>
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Hello Robert,

I and SQLsmith have discovered one more anomaly (reproduced starting from
e0e4c132e):
load 'test_plan_advice';
select object_type from
  (select object_type from information_schema.element_types limit 1),
  lateral
  (select sum(1) over (partition by a) from generate_series(1, 2) g(a) where false);

triggers an internal error:
ERROR:  XX000: no rtoffset for plan unnamed_subquery
LOCATION:  pgpa_plan_walker, pgpa_walker.c:110

Could you please have a look?

Best regards,
Alexander





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