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help / color / mirror / Atom feedFrom: David Rowley <[email protected]>
To: Tom Lane <[email protected]>
Cc: Daniel Farkaš <[email protected]>
Cc: Magnus Hagander <[email protected]>
Cc: PostgreSQL mailing lists <[email protected]>
Subject: Re: BUG #17502: View based on window functions returns wrong results when queried
Date: Mon, 30 May 2022 14:51:16 +1200
Message-ID: <CAApHDvpacAbOTYeTPCgKnafUOvJT0=dFP0q+eVhOhB2Yaa8+QQ@mail.gmail.com> (raw)
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On Mon, 30 May 2022 at 14:45, Tom Lane <[email protected]> wrote:
>
> David Rowley <[email protected]> writes:
> > On Mon, 30 May 2022 at 14:19, Tom Lane <[email protected]> wrote:
> >> I was sort of wondering why we allow SRFs in this context in the
> >> first place. The results don't seem terribly well-defined to me.
>
> > Do you think it would fly to add such a restriction in the backbranches?
>
> We could leave it alone in the back branches on the grounds that if
> you like the results you get, we shouldn't break it in a minor
> release.
I struggle to see how anyone would like their result correctness to
depend on whether remove_unused_subquery_outputs() is able or unable
to remove a column from the subquery.
David
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Subject: Re: BUG #17502: View based on window functions returns wrong results when queried
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