Re: TRAP: failed Assert("outerPlan != NULL") in postgres_fdw.c

On Fri, Oct 3, 2025 at 4:00 AM Etsuro Fujita <etsuro.fujita@gmail.com> wrote:
>
> On Fri, Oct 3, 2025 at 7:21 AM Masahiko Sawada <sawada.mshk@gmail.com> wrote:
> > I've updated the patch based on your comments. Please find the attached patch.
>
> Thanks for updating the patch!
>
> +step "s1_tuplock" {
> +    EXPLAIN (COSTS OFF, ANALYZE ON, TIMING OFF, SUMMARY OFF, BUFFERS OFF)
> +    SELECT a.i,
> +       (SELECT 1 FROM fb, fc WHERE a.i = fb.i AND fb.i = fc.i)
> +    FROM a as a
> +    FOR UPDATE;
> +}
>
> Maybe my comment about this step was not enough, but I'm wondering we
> should run EXPLAIN and then SELECT here like below, rather than
> running EXPLAIN ANALYZE, as that seems more usual to me:
>
> step "s1_tuplock" {
>     EXPLAIN (VERBOSE, COSTS OFF)
>     SELECT a.i,
>        (SELECT 1 FROM fb, fc WHERE a.i = fb.i AND fb.i = fc.i)
>     FROM a
>     FOR UPDATE;
>     SELECT a.i,
>        (SELECT 1 FROM fb, fc WHERE a.i = fb.i AND fb.i = fc.i)
>     FROM a
>     FOR UPDATE;
> }
>
> I added the VERBOSE option to show the remote query, and removed the
> alias for a.

Done.

> BTW: you added quotation marks around a name for each session or step
> like "s1_tuplock".  Do we really need them?  This is nitpicking,
> though.

No, I brought a convention from other spec files. I've unquoted all
sessions and steps.

I've attached the updated patch that dealt with all comments including
ones Michael-san made[1].

Regards,

[1] https://www.postgresql.org/message-id/aN8fYwIw0p7ZMYGA%40paquier.xyz

--
Masahiko Sawada
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