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From: Merlin Moncure <[email protected]>
To: Tom Lane <[email protected]>
Cc: David G. Johnston <[email protected]>
Cc: Nico Williams <[email protected]>
Cc: Adrian Klaver <[email protected]>
Cc: Laurenz Albe <[email protected]>
Cc: Olleg Samoylov <[email protected]>
Cc: pgsql-generallists.postgresql.org <[email protected]>
Subject: Re: Interesting case of IMMUTABLE significantly hurting performance
Date: Fri, 11 Apr 2025 18:31:35 -0500
Message-ID: <CAHyXU0wox32G2SteVou7VrBz1CHbDEcsGaTzgpLoyxGFHrN3YQ@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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On Thu, Apr 10, 2025 at 10:51 PM Tom Lane <[email protected]> wrote:

> Merlin Moncure <[email protected]> writes:
> > I guess the real problems here are lack of feedback on a number of
> fronts:
> > *) the server knows the function is not immutable but lets you create it
> > anyway, even though it can have negative downstream consequences
>
> That's debatable I think.  If you know what you're doing, you're going
> to be annoyed by warnings telling you that you don't.
>
> > *) there is no way to discern inline vs non-inlined execution in explain
>
> That's simply false.  Using the examples in this thread:
>

ah -- gotcha.  misread the original email --  should have known better :)
thanks

merlin


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