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help / color / mirror / Atom feedFrom: Richard Guo <[email protected]>
To: Tender Wang <[email protected]>
Cc: Chengpeng Yan <[email protected]>
Cc: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: BUG #19534: Qual pushdown across a window subquery is unsafe with nondeterministic partition collations
Date: Mon, 29 Jun 2026 10:41:07 +0900
Message-ID: <CAMbWs48Fe5XQvVBr_a7rMy5zXb4yhGqnFOxd8MLasP7QCCxUOw@mail.gmail.com> (raw)
In-Reply-To: <CAHewXN=xpqkC5FKc3st1zXrixgR-8Y_NEw_08vCCoPE-dcZccA@mail.gmail.com>
References: <[email protected]>
<CAHewXNk8xt1pNepcEiCx_e6_SW_=bm1GNnU7+bPczoZJuLC5qQ@mail.gmail.com>
<[email protected]>
<CAHewXN=xpqkC5FKc3st1zXrixgR-8Y_NEw_08vCCoPE-dcZccA@mail.gmail.com>
On Mon, Jun 29, 2026 at 10:23 AM Tender Wang <[email protected]> wrote:
> The correct result is the most important thing. So I agree with you.
> The fix seems obvious: we should refuse quals pushed down to the
> subquery if the quals contain a nondeterministic partition clause var.
This class of bug is currently being discussed and addressed on thread
[1]. I suggest we consolidate the discussion there to avoid
duplicating effort.
[1] https://postgr.es/m/CAMbWs49dHFVVwx9MjYmvUrZu0L4vZTbGVyhj3T2SsWgS1Bzhzg@mail.gmail.com
- Richard
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To: [email protected]
Cc: [email protected], [email protected], [email protected], [email protected], [email protected]
Subject: Re: BUG #19534: Qual pushdown across a window subquery is unsafe with nondeterministic partition collations
In-Reply-To: <CAMbWs48Fe5XQvVBr_a7rMy5zXb4yhGqnFOxd8MLasP7QCCxUOw@mail.gmail.com>
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