-<!-- $PostgreSQL: pgsql/doc/src/sgml/datatype.sgml,v 1.248 2010/04/03 07:22:53 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/datatype.sgml,v 1.249 2010/06/29 00:03:39 petere Exp $ -->
<chapter id="datatype">
<title>Data Types</title>
The default is <literal>CONTENT</literal>, so all forms of XML
data are allowed.
</para>
+
+ <note>
+ <para>
+ With the default XML option setting, you cannot directly cast
+ character strings to type <type>xml</type> if they contain a
+ document type declaration, because the definition of XML content
+ fragment does not accept them. If you need to do that, either
+ use <literal>XMLPARSE</literal> or change the XML option.
+ </para>
+ </note>
+
</sect2>
<sect2>