Hi,
> In SPARQL you can not convert a value from a datatype into another one.
> SPARQL is a Query Language (the last two letters of the acronym).
> If you need to convert values you have to process the results with
> another language (e.g. PHP, Java, Javascript, etc.).
Are you sure about that? At least for the FILTER statement convert functions
are allowed.
See [1] at the end of the paragraph:
...FILTER ( xsd:dateTime(?date) < xsd:dateTime("2005-01-01T00:00:00Z") )...
That's why I'm wondering whether these conversion are allowed in the WHERE
statement, too.
[1] http://www.w3.org/TR/rdf-sparql-query/#tests
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