From: Tom Lane <tgl@sss.pgh.pa.us>
To: jimmy.b.mau@gmail.com
cc: pgsql-docs@lists.postgresql.org
Subject: Re: Typo in 2.7 Aggregate Functions
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Comments: In-reply-to PG Doc comments form <noreply@postgresql.org>
	message dated "Mon, 16 Jan 2023 15:50:08 +0000"
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Date: Mon, 16 Jan 2023 12:11:58 -0500
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PG Doc comments form <noreply@postgresql.org> writes:
> Near the end of Chapter 2.7 Aggregate Functions of the documentation, th=
e
> command FILTER is introduced. The full query is

> SELECT city, max(temp_lo), count(*) FILTER (WHERE temp_lo < 30)
>     FROM weather
>     GROUP BY city
>     HAVING max(temp_lo) < 40;

> and the output shows a count value of 5. This is an error.

Yeah :-(.  This is already fixed in our source tree [1], as you
can see on the website if you look at the "devel" branch.  But the
released-version docs won't update till our next releases, in
February.

Thanks for the report, anyway!

			regards, tom lane

[1] https://git.postgresql.org/gitweb/?p=3Dpostgresql.git&a=3Dcommitdiff&h=
=3Df05a5e0003edfec027ee10d09082667036862e1c