Question

Using xquery 1.0, I want to take a sequence like this;

<foo xml:id="x20"/>
<foo xml:id="x47"/>
<foo xml:id="x3"/>

And collate the ids into a string to put in an attribute of a new element like this;

<bar ids="x20 x47 x3"/>

Is there a way to do it without manually iterating over the input sequence using a FLWOR?

Answer 1

let $s := (<foo xml:id="x20"/>,<foo xml:id="x47"/>,<foo xml:id="x3"/>)
return <bar ids="{$s/@xml:id}"/>