From 042467c84a4f9d3cbbdb7660b0b174d99dadde9d Mon Sep 17 00:00:00 2001
From: coreyhuinker <corey.huinker@gmail.com>
Date: Sun, 19 Sep 2021 23:26:28 -0400
Subject: [PATCH 2/2] Add example to show the effect of AT TIME ZONE INTERVAL.

---
 doc/src/sgml/func.sgml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 78812b2dbe..eee10f2db9 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -10435,6 +10435,9 @@ SELECT TIMESTAMP WITH TIME ZONE '2001-02-16 20:38:40-05' AT TIME ZONE 'America/D
 
 SELECT TIMESTAMP '2001-02-16 20:38:40' AT TIME ZONE 'Asia/Tokyo' AT TIME ZONE 'America/Chicago';
 <lineannotation>Result: </lineannotation><computeroutput>2001-02-16 05:38:40</computeroutput>
+
+SELECT TIMESTAMP '2001-02-16 20:38:40' AT TIME ZONE 'UTC' AT TIME ZONE INTERVAL '3:21:20' HOUR TO SECOND;
+<lineannotation>Result: </lineannotation><computeroutput>2001-02-17 00:00:00+00</computeroutput>
 </screen>
     The first example adds a time zone to a value that lacks it, and
     displays the value using the current <varname>TimeZone</varname>
@@ -10442,7 +10445,8 @@ SELECT TIMESTAMP '2001-02-16 20:38:40' AT TIME ZONE 'Asia/Tokyo' AT TIME ZONE 'A
     to the specified time zone, and returns the value without a time zone.
     This allows storage and display of values different from the current
     <varname>TimeZone</varname> setting.  The third example converts
-    Tokyo time to Chicago time.
+    Tokyo time to Chicago time. The fourth example adds the time zone UTC
+    to a value that lacks it, and then applies a highly contrived fixed offset.
    </para>
 
    <para>
-- 
2.30.2