From 10257fc5ff74487a46594bd8c8c041878f409c17 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Mon, 20 Feb 2017 10:05:00 -0500
Subject: [PATCH] Fix documentation of to_char/to_timestamp TZ, tz, OF
 formatting patterns.

These are only supported in to_char, not in the other direction, but the
documentation failed to mention that.  Also, describe TZ/tz as printing the
time zone "abbreviation", not "name", because what they print is elsewhere
referred to that way.  Per bug #14558.
---
 doc/src/sgml/func.sgml | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index d7738b18b7a..1c8202c257c 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -6062,15 +6062,18 @@ SELECT regexp_match('abc01234xyz', '(?:(.*?)(\d+)(.*)){1,1}');
        </row>
        <row>
         <entry><literal>TZ</literal></entry>
-        <entry>upper case time-zone name</entry>
+        <entry>upper case time-zone abbreviation
+         (only supported in <function>to_char</>)</entry>
        </row>
        <row>
         <entry><literal>tz</literal></entry>
-        <entry>lower case time-zone name</entry>
+        <entry>lower case time-zone abbreviation
+         (only supported in <function>to_char</>)</entry>
        </row>
        <row>
         <entry><literal>OF</literal></entry>
-        <entry>time-zone offset</entry>
+        <entry>time-zone offset from UTC
+         (only supported in <function>to_char</>)</entry>
        </row>
       </tbody>
      </tgroup>