From 85801ed9b860cba28ec5e79f1dc35ce4dcbf1c9d Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Wed, 31 Oct 2001 04:50:52 +0000
Subject: [PATCH] Attached is a small patch for the Reference Manual which adds
information about nulls and sort order.
This is based on information obtained from Peter Eisentraut and
Tom Lane on pgsql-hackers.
Please check my English and Docbook markup, as both are a second
language to me.
Rene Pijlman
---
doc/src/sgml/ref/select.sgml | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/doc/src/sgml/ref/select.sgml b/doc/src/sgml/ref/select.sgml
index 7765af05d14..3d45eff040e 100644
--- a/doc/src/sgml/ref/select.sgml
+++ b/doc/src/sgml/ref/select.sgml
@@ -1,5 +1,5 @@
<!--
-$Header: /cvsroot/pgsql/doc/src/sgml/ref/select.sgml,v 1.49 2001/10/23 16:42:36 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/ref/select.sgml,v 1.50 2001/10/31 04:50:52 momjian Exp $
Postgres documentation
-->
@@ -601,6 +601,13 @@ SELECT name FROM distributors ORDER BY code;
specific ordering operator name may be specified. ASC is equivalent
to USING < and DESC is equivalent to USING >.
</para>
+
+ <para>
+ The null value sorts higher than any other value in a domain. In other
+ words, with ascending sort order nulls sort at the end and with
+ descending sort order nulls sort at the beginning.
+ </para>
+
</refsect2>
<refsect2 id="SQL-UNION">
--
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