Index: doc/src/sgml/ref/select.sgml
===================================================================
RCS file: /projects/cvsroot/pgsql/doc/src/sgml/ref/select.sgml,v
retrieving revision 1.49
diff -c -r1.49 select.sgml
*** doc/src/sgml/ref/select.sgml	2001/10/23 16:42:36	1.49
--- doc/src/sgml/ref/select.sgml	2001/10/28 21:37:26
***************
*** 601,606 ****
--- 601,613 ----
      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 start.
+    </para>
+ 
    </refsect2>
    
    <refsect2 id="SQL-UNION">