From 17d3233e1bfd9fbe856f032a542f2c595e79ca01 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sat, 28 Jan 2012 20:54:56 -0500
Subject: [PATCH] Update statement about sorting of character-string data.
The sort order is no longer fixed at database creation time, but can be
controlled via COLLATE. Noted by Thomas Kellerer.
---
doc/src/sgml/ref/select.sgml | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/doc/src/sgml/ref/select.sgml b/doc/src/sgml/ref/select.sgml
index 39fc6b6d830..01c01046249 100644
--- a/doc/src/sgml/ref/select.sgml
+++ b/doc/src/sgml/ref/select.sgml
@@ -1050,8 +1050,13 @@ SELECT name FROM distributors ORDER BY code;
</para>
<para>
- Character-string data is sorted according to the locale-specific
- collation order that was established when the database was created.
+ Character-string data is sorted according to the collation that applies
+ to the column being sorted. That can be overridden at need by including
+ a <literal>COLLATE</> clause in the
+ <replaceable class="parameter">expression</replaceable>, for example
+ <literal>ORDER BY mycolumn COLLATE "en_US"</>.
+ For more information see <xref linkend="sql-syntax-collate-exprs"> and
+ <xref linkend="collation">.
</para>
</refsect2>
--
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