COUNT(distinct ?s) doesn't work with a remote endpoint

[rudenis]

This test query -

select ?s (COUNT(distinct ?s) AS ?count)
where {
?s a ?Concept .
FILTER (?s = http://dbpedia.org/ontology/deathDate)
}
GROUP BY ?s
LIMIT 1

should work at the dbpedia endpoint.

With arc2 it works only without 'distinct', i.e. as -

select ?s (COUNT(?s) AS ?count)

---

EDIT by @k00ni: Formatted the SPARQL queries.

[ross-spencer]

I'm finding the same for a local endpoint, so query:

No result bindings specified. in ARC2_SPARQLPlusParser

SELECT (COUNT(DISTINCT ?s) as ?total)
WHERE {
{
 ?s  <http://digipres.org/formats/sources/pronom/formats/#hasMagic> "true" . 
} UNION {
 ?s  <http://the-fr.org/prop/format-registry/hasPRONOMContainerMagic> "true" .
}
}

Endpoint: http://the-fr.org/public/sparql/endpoint.php?

Query URL: http://the-fr.org/public/sparql/endpoint.php?query=SELECT+%28COUNT%28DISTINCT+%3Fs%29+as+%3Ftotal%29%0D%0AWHERE+%7B%0D%0A%7B%0D%0A+%3Fs++%3Chttp%3A%2F%2Fdigipres.org%2Fformats%2Fsources%2Fpronom%2Fformats%2F%23hasMagic%3E+%22true%22+.+%0D%0A%7D+UNION+%7B%0D%0A+%3Fs++%3Chttp%3A%2F%2Fthe-fr.org%2Fprop%2Fformat-registry%2FhasPRONOMContainerMagic%3E+%22true%22+.%0D%0A%7D%0D%0A%7D%0D%0A&output=tsv&jsonp=&key=&show_inline=1

[k00ni]

Hi, anyone find a solution/workaround for this?