From 2eb59adcf215d7d4fa232342d282f81901a70735 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Tue, 31 Mar 2015 20:02:40 -0400
Subject: [PATCH] Fix incorrect markup in documentation of window frame
 clauses.

You're required to write either RANGE or ROWS to start a frame clause,
but the documentation incorrectly implied this is optional.  Noted by
David Johnston.
---
 doc/src/sgml/ref/select.sgml | 4 ++--
 doc/src/sgml/syntax.sgml     | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/doc/src/sgml/ref/select.sgml b/doc/src/sgml/ref/select.sgml
index 86709289c4..a73e89a73a 100644
--- a/doc/src/sgml/ref/select.sgml
+++ b/doc/src/sgml/ref/select.sgml
@@ -623,8 +623,8 @@ WINDOW <replaceable class="parameter">window_name</replaceable> AS ( <replaceabl
     The <replaceable class="parameter">frame_clause</> can be one of
 
 <synopsis>
-[ RANGE | ROWS ] <replaceable>frame_start</>
-[ RANGE | ROWS ] BETWEEN <replaceable>frame_start</> AND <replaceable>frame_end</>
+{ RANGE | ROWS } <replaceable>frame_start</>
+{ RANGE | ROWS } BETWEEN <replaceable>frame_start</> AND <replaceable>frame_end</>
 </synopsis>
 
     where <replaceable>frame_start</> and <replaceable>frame_end</> can be
diff --git a/doc/src/sgml/syntax.sgml b/doc/src/sgml/syntax.sgml
index a348b11f7c..76cd732730 100644
--- a/doc/src/sgml/syntax.sgml
+++ b/doc/src/sgml/syntax.sgml
@@ -1695,8 +1695,8 @@ SELECT string_agg(a ORDER BY a, ',') FROM table;  -- incorrect
     and the optional <replaceable class="parameter">frame_clause</replaceable>
     can be one of
 <synopsis>
-[ RANGE | ROWS ] <replaceable>frame_start</>
-[ RANGE | ROWS ] BETWEEN <replaceable>frame_start</> AND <replaceable>frame_end</>
+{ RANGE | ROWS } <replaceable>frame_start</>
+{ RANGE | ROWS } BETWEEN <replaceable>frame_start</> AND <replaceable>frame_end</>
 </synopsis>
     where <replaceable>frame_start</> and <replaceable>frame_end</> can be
     one of
-- 
2.50.0