Re: Make EXPLAIN generate a generic plan for a parameterized query

From: Christoph Berg <myon(at)debian(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, Andres Freund <andres(at)anarazel(dot)de>, Michel Pelletier <pelletier(dot)michel(at)gmail(dot)com>, Julien Rouhaud <rjuju123(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Make EXPLAIN generate a generic plan for a parameterized query
Date: 2023-03-24 20:26:32
Message-ID: ZB4HeL0yxaN2yL2X@msg.df7cb.de
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Re: Tom Lane
> I don't actually see why a postgres_fdw test case is needed at all?
> The tests in explain.sql seem sufficient.

When I asked Laurenz about that he told me that local tables wouldn't
exercise the code specific for EXEC_FLAG_EXPLAIN_GENERIC.

(Admittedly my knowledge of the planner wasn't deep enough to verify
that. Laurenz is currently traveling, so I don't know if he could
answer this himself now.)

Christoph

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