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help / color / mirror / Atom feedFrom: Andrei Lepikhov <[email protected]>
To: Matthias van de Meent <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: David Rowley <[email protected]>
Cc: [email protected]
Subject: Re: Expand applicability of aggregate's sortop optimization
Date: Tue, 3 Sep 2024 08:25:53 +0200
Message-ID: <[email protected]> (raw)
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References: <CAEze2Wg-+EV4HdbQiut7X3KQd39xwmrpV4CeCmoJFFjH8cGdhw@mail.gmail.com>
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On 18/7/2024 14:49, Matthias van de Meent wrote:
> Aside: Arguably, checking for commutator operators would not be
> incorrect when looking at it from "applied operators" point of view,
> but if that commutative operator isn't registered as opposite ordering
> of the same btree opclass, then we'd probably break some assumptions
> of some aggregate's sortop - it could be registered with another
> opclass, and that could cause us to select a different btree opclass
> (thus: ordering) than is indicated to be required by the aggregate;
> the thing we're trying to protect against here.
Hi,
This thread stands idle. At the same time, the general idea of this
patch and the idea of utilising prosupport functions look promising. Are
you going to develop this feature further?
--
regards, Andrei Lepikhov
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