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Question regarding subselect

From: Simon Schenk <sschenk@uni-koblenz.de>
Date: Thu, 30 Apr 2009 12:48:19 +0200
Message-ID: <49F981F3.7000105@uni-koblenz.de>
To: SPARQL Working Group <public-rdf-dawg@w3.org>
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Hi,

I have a question regarding subselects, as the feature has been discussed,
before I joined the WG.

If we do not add any features such as aggregates, scalar expressions, assignment
or similar - do subselects add anything to the expressiveness of the language?
All examples in the wiki include at least one such additional feature.

Typical uses such as FORALL or EXISTS should be possible in the current version
of SPARQL using a combination of OPTIONAL, BOUND filters and perhaps DISTINCT, I
think.

I would like to understand better the implications of adding subselects and in
particular dependencies with other features.

Best regards,
Simon
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Received on Thursday, 30 April 2009 10:49:16 GMT

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