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help / color / mirror / Atom feedFrom: Eugen Konkov <[email protected]>
To: Tom Lane <[email protected]>
Cc: [email protected]
Subject: Re: The document contains false statements
Date: Tue, 16 Sep 2025 16:55:58 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
<[email protected]>
Hello Tom,
Saturday, September 13, 2025, 7:25:08 PM, you wrote:
> PG Doc comments form <[email protected]> writes:
>> The following documentation comment has been logged on the website:
>> Page: https://www.postgresql.org/docs/17/sql-createfunction.html
>> Description:
>>> This is effectively another way of declaring a named OUT parameter
>> Actually OUT works twice slower in compare to RETURNS TABLE
> You stopped reading halfway through that sentence... it says
> This is effectively another way of declaring a named OUT parameter,
> except that RETURNS TABLE also implies RETURNS SETOF.
> The difference between a set-returning and not-set-returning
> function might explain what you're seeing, particularly because
> the rules for inlining SQL functions are different in the two
> cases.
> A documentation comment is not the place to pursue this further,
> but you could ask for help on our pgsql-performance mailing list.
> regards, tom lane
Let me continue how to improve this in David G. thread.
--
Best regards,
Eugen Konkov
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