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From: Tom Lane <[email protected]>
To: Michael Paquier <[email protected]>
Cc: David Rowley <[email protected]>
Cc: PostgreSQL Developers <[email protected]>
Subject: Re: Stability of queryid in minor versions
Date: Sun, 14 Apr 2024 21:19:34 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <CAApHDvpYGE6h0cD9UO-eHySPynPj1L3J=HxT+A7Ud8_Yo6AuzA@mail.gmail.com>
	<[email protected]>

Michael Paquier <[email protected]> writes:
> On Mon, Apr 15, 2024 at 11:20:16AM +1200, David Rowley wrote:
>> 1. We cannot change Node enums in minor versions
>> 2. We're *unlikely* to add fields to Node types in minor versions, and
>> if we did we'd likely be leaving them out of the jumble calc, plus it
>> seems highly unlikely any new field we wedged into the padding would
>> relate at all to the parsed query.

> Since 16 these new fields would be added by default unless the node
> attribute query_jumble_ignore is appended to it.

They'd also be written/read by outfuncs/readfuncs, thereby breaking
stored views/rules if the Node is one that can appear in a parsetree.
So the bar to making such a change in a stable branch would be very
high.

			regards, tom lane

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