From df51e5285e43d196ba0f5caeddd06d1ce451e70c Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Mon, 20 Feb 2017 10:05:01 -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 | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index ff8cd0d56e6..f3efb020784 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -5509,11 +5509,13 @@ SELECT regexp_matches('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>
       </tbody>
      </tgroup>