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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Yugo NAGATA <nagata@sraoss.co.jp>
Cc: David G. Johnston <david.g.johnston@gmail.com>
Cc: Peter Eisentraut <peter@eisentraut.org>
Cc: David Rowley <dgrowleyml@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: Document NULL
Date: Wed, 19 Jun 2024 01:45:43 -0400
Message-ID: <54757.1718775943@sss.pgh.pa.us> (raw)
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	<20240619141520.9fefb69d051fb112f41bf1d1@sraoss.co.jp>

Yugo NAGATA <nagata@sraoss.co.jp> writes:
> On Tue, 18 Jun 2024 20:56:58 -0700
> "David G. Johnston" <david.g.johnston@gmail.com> wrote:
>> But it is neither a keyword nor an identifier.

The lexer would be quite surprised by your claim that NULL isn't
a keyword.  Per src/include/parser/kwlist.h, NULL is a keyword,
and a fully reserved one at that.

			regards, tom lane

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