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From: John Naylor <[email protected]>
To: David Rowley <[email protected]>
Cc: Richard Guo <[email protected]>
Cc: Chengpeng Yan <[email protected]>
Cc: [email protected] <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: BUG #19533: Wrong results from WindowAgg run-condition pushdown on count() with EXCLUDE CURRENT ROW
Date: Fri, 3 Jul 2026 16:11:13 +0700
Message-ID: <CANWCAZbhqpLOWKLx4FSdwRFuBDG6YLjdYkDyy7hCbO0wOngb-A@mail.gmail.com> (raw)
In-Reply-To: <CANWCAZbiYQ+=CHAaftwp2x83Gy6tJCB8GUe15yO5DW-cpp0Mxg@mail.gmail.com>
References: <[email protected]>
	<[email protected]>
	<CAMbWs4-6umOecRifmC88RW0SHWDAvb4c3-VD8XQ3NJufsUyUOQ@mail.gmail.com>
	<CAApHDvqHXZpF9pPStLqPp5O=G2gVpPD959bMTRRkLjdy4Tvx7g@mail.gmail.com>
	<CAApHDvoJ07GM6V2QWyJAgsJcM-dcFS+nwPq4Um=-NsXv5PmoCw@mail.gmail.com>
	<CANWCAZbiYQ+=CHAaftwp2x83Gy6tJCB8GUe15yO5DW-cpp0Mxg@mail.gmail.com>

On Fri, Jul 3, 2026 at 4:09 PM John Naylor <[email protected]> wrote:
> =# SELECT * FROM
>   (SELECT x,
>           count(*) OVER (ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) c
>    FROM t7) s
> WHERE c + 0 >= 2;    -- baseline
>  x | c
> ---+---
>  2 | 2
>  2 | 3
> (2 rows)

Sorry, this last result should be

 x | c
---+---
 8 | 2
 9 | 3
(2 rows)

-- 
John Naylor
Amazon Web Services






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  Subject: Re: BUG #19533: Wrong results from WindowAgg run-condition pushdown on count() with EXCLUDE CURRENT ROW
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