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Date: Sun, 5 Apr 2026 11:00:00 +0300
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Subject: Re: pg_plan_advice
To: Robert Haas <robertmhaas@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>
Cc: Lukas Fittl <lukas@fittl.com>, Andrei Lepikhov <lepihov@gmail.com>,
 PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
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From: Alexander Lakhin <exclusion@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