From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sun, 29 Jan 2012 01:54:56 +0000 (-0500)
Subject: Update statement about sorting of character-string data.
X-Git-Url: http://git.postgresql.org/gitweb/static/developers.postgresql.org?a=commitdiff_plain;h=b3bd5a093f3758cf168dae88478f9fc5b37ff6b1;p=users%2Frhaas%2Fpostgres.git

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.
---

diff --git a/doc/src/sgml/ref/select.sgml b/doc/src/sgml/ref/select.sgml
index 9f53f77804..070c76934f 100644
--- a/doc/src/sgml/ref/select.sgml
+++ b/doc/src/sgml/ref/select.sgml
@@ -1049,8 +1049,13 @@ 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>