[Rdfapi-php-interest] SPARQL query with FILTER not working

[GSO <gs...@ya...>]

A basic test statement - this works fine without the FILTER added, but
returns a boolean false as a result with:

PREFIX ll: <http://www.gsowww.uklinux.net/librarylinks/vocabulary#>
SELECT *
WHERE { ?url ll:title ?title .
	?url ll:abstract ?abstract .
	?url ll:date ?date .
	?url ll:publisher ?publisher .
	FILTER ?date >= 0
}
ORDER BY DESC(?date)

'?date' is a number created with mktime(), e.g., Literal: 1112486400.

If anyone can figure the bug in this I'd very much appreciate it.

Thanks

GSO
http://www.gsowww.uklinux.net/pub