XML: Return elements of a sequence that occur certain number of times

Question

I have an XML file with information on movies. I want my expression to return the directors in the XML that have directed more than 1 movie.

What I have now is:

Answer 1

I solved the problem with the following code:

let $directors := distinct-values(
for $director in //director
where count(result/videos/video[director = $director]) > 1
return $director
)
return $directors