Adrian Walker wrote:
Hi All --
Is there a consensus emerging please on the syntax and semantics* of
SPARQL aggregation over RDF?
If I understand correctly, there are some implementations doing their
own things, but as yet no standard.
If that's indeed the case, is there a timeline for a standard?
Surely, SPARQL should avoid the multi-vendor situation that SQL got in
to on this matter?
Thanks for educating me about this, -- Adrian
* Semantics as in, ideally, a model theory that says what the result of
any aggregation must be.
One way to define the results would be to extend the SPARQL algebra with
group/aggregation. Not a model theory - but it would define the results of an
aggregation.
Andy
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