Re: Violation of principle that plan trees are read-only

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: Violation of principle that plan trees are read-only
Date: 2025-05-21 16:05:58
Message-ID: 1288373.1747843558@sss.pgh.pa.us
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I wrote:
> Oh, scratch that: I'd gotten confused about which branch I was
> working in. It does change the output as you say.

After poking at that for awhile, I decided we need a small tweak
in EXPLAIN itself to make the output consistent. See attached.

I'm now leaning against back-patching, as there is a user-visible
behavior change in EXPLAIN, and I don't think there are really
any severe consequences to the mistaken assignments.

regards, tom lane

Attachment Content-Type Size
v1-0001-In-ExecInitModifyTable-don-t-scribble-on-the-sour.patch text/x-diff 8.9 KB

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