Documentation tweak for row-valued expressions and null

From: Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>
To: Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Documentation tweak for row-valued expressions and null
Date: 2015-07-27 01:40:35
Message-ID: CAEepm=1wW4MGBS6Hwteu6B-OMZiX6_FM=Wfyn7oTeHyCfkgDDw@mail.gmail.com
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Hi

I wonder if it might be worth adding a tiny note to the manual to
point out that the special logic for "<row-valued-expression> IS [ NOT
] NULL" doesn't apply anywhere else that we handle nulls or talk about
[non]-null values in the manual. See attached.

--
Thomas Munro
http://www.enterprisedb.com

Attachment Content-Type Size
note-about-row-is-null.patch application/octet-stream 774 bytes

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