(: declare functions :)
declare function local:cd-info($cd as element()? ) as element()?
{
let $t := $cd/title
let $a := $cd/artist
return
Title: {data($t)}
Artist: {data($a)}
};
Cd Collection
{
for $c in distinct-values(doc("../../samples/cdcatalog.xml")/catalog/cd/country)
return
{$c}
{
for $x in doc("../../samples/cdcatalog.xml")/catalog/cd
where $x/country = $c
return
{local:cd-info($x)}
}
CD# = {count(doc("../../samples/cdcatalog.xml")/catalog/cd[country = $c])}
}