Re: Failed assertion in joininfo.c, remove_join_clause_from_rels

From: Richard Guo <guofenglinux(at)gmail(dot)com>
To: Alexander Korotkov <aekorotkov(at)gmail(dot)com>
Cc: Andreas Seltenreich <seltenreich(at)gmx(dot)de>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Alexander Korotkov <akorotkov(at)postgresql(dot)org>
Subject: Re: Failed assertion in joininfo.c, remove_join_clause_from_rels
Date: 2023-12-27 12:03:57
Message-ID: CAMbWs49x_uMNas939aOck17_W7tKSMr_bZb7uHsYDZktuKznKA@mail.gmail.com
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On Wed, Dec 27, 2023 at 8:00 PM Alexander Korotkov <aekorotkov(at)gmail(dot)com>
wrote:

> On Wed, Dec 27, 2023 at 1:54 PM Andreas Seltenreich <seltenreich(at)gmx(dot)de>
> wrote:
> > SQLsmith found a failing Assertion in joininfo.c on master. I can
> > reproduce it on an assertion-enabled build like this:
> >
> > create table t1(a int primary key);
> > create table t2(a int);
> >
> > select * from t2 right join
> > (t1 as t1a inner join t1 as t1b on t1a.a = t1b.a)
> > on t1a.a is not null and exists (select);
> >
> > -- TRAP: failed Assert("list_member_ptr(rel->joininfo, restrictinfo)"),
> File: "joininfo.c", Line: 144, PID: 777839
>
> Thank you for pointing this out. I'm investigating.

This is the same issue with [1] and has been just fixed by e0477837ce.

[1]
https://www.postgresql.org/message-id/flat/CAMbWs4_wJthNtYBL%2BSsebpgF-5L2r5zFFk6xYbS0A78GKOTFHw%40mail.gmail.com

Thanks
Richard

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