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FW: Comments on SPARQL draft

From: Seaborne, Andy <andy.seaborne@hp.com>
Date: Wed, 3 Nov 2004 16:10:48 -0000
Message-ID: <8D5B24B83C6A2E4B9E7EE5FA82627DC94D2F78@sdcexcea01.emea.cpqcorp.net>
To: <public-rdf-dawg@w3.org>

Geoff points out an issue in handling comparisons.

On the other hand, there is much RDF data that does not use typing yet.

I propose that SPARQL does not require processing plain literals as
numbers if they just happen to look like numbers.  Implementations would
be free to provide this if they choose to but it is outside the rec
(i.e. SPARQL does not forbid it either).


-------- Original Message --------
> From: Geoff Chappell <>
> Date: 17 October 2004 21:51
> Here are a few comments on the SPARQL draft - hope they're helpful.


> - Typing
> I may be jumping the gun here since there's not yet much specified
> typing and value comparisons, but please keep query performance
> large triple stores in mind when specifying the behavior of comparison
> operators such as > and <. If those operators are too type lenient
> (e.g. if 
> they're allowed to operate on plain literals), it makes it very
> difficult to 
> do an efficient indexed query.
Received on Wednesday, 3 November 2004 16:11:20 UTC

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