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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
-
- This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
- project.
-
- Copyright (C) 1998-2018 OpenLink Software
-
- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; only version 2 of the License, dated June 1991.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
-
-->
<refentry id="xpf_unordered">
<refmeta>
<refentrytitle>unordered</refentrytitle>
<refmiscinfo>XPATH</refmiscinfo>
</refmeta>
<refnamediv>
<refname>unordered</refname>
<refpurpose>Returns the given sequence in any order.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="xpf_syn_unordered">
<funcprototype id="xpf_proto_unordered">
<funcdef>sequence <function>unordered</function></funcdef>
<paramdef><parameter>input</parameter> sequence</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="xpf_desc_unordered"><title>Description</title>
<para>The function takes a sequence, or more typically an expression that evaluates to a sequence,
and indicates that the result sequence may be returned in any order.
</para>
</refsect1>
<refsect1 id="xpf_params_unordered"><title>Parameters</title>
<refsect2><title>input</title>
<para>The sequence of nodes</para></refsect2>
</refsect1>
<refsect1 id="xpf_ret_unordered"><title>Return Types</title><para>Sequence</para></refsect1>
<refsect1 id="xpf_examples_unordered"><title>Examples</title>
<example id="xpf_ex_unordered"><title>Finding pairs of books</title>
<para>The following example is from the XQuery standard and it
illustrates how to find pairs of books that have different titles but the same set of authors
(possibly in a different order).</para>
<screen>
<bib>
{
for $book1 in document("bib.xml")/bib/book,
$book2 in document("bib.xml")/bib/book
where $book1/title > $book2/title
and $book1/author = $book2/author
return
<book-pair>
{ $book1/title, $book2/title }
</book-pair>
}
</bib>
</screen>
</example>
</refsect1>
</refentry>
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