W3C home > Mailing lists > Public > public-rdf-wg@w3.org > April 2011

SPARQL update with blank nodes

From: Peter Frederick Patel-Schneider <pfps@research.bell-labs.com>
Date: Wed, 20 Apr 2011 13:36:02 -0400
Message-ID: <20110420.133602.2277395017031443095.pfps@research.bell-labs.com>
To: <public-rdf-wg@w3.org>
CC: <alexhall@revelytix.com>
So now I don't understand SPARQL 1.1 Update, which states

Deleting triples that are not present, or from a graph that is not
present will have no effect and will result in success. *Using a new
blank node in a delete template will lead to nothing being deleted, as
the new blank node cannot match anything that already exists.* [emphasis

because blank nodes *do* match, as per SPARQL 1.1 query.


From: Alex Hall <alexhall@revelytix.com>
Subject: Re: matching basic graph patterns
Date: Wed, 20 Apr 2011 11:25:28 -0500

> On Wed, Apr 20, 2011 at 12:16 PM, Peter Frederick Patel-Schneider <
> pfps@research.bell-labs.com> wrote:
>> Does anyone know where matching basic graph patterns is defined in the
>> new SPARQL documents?  I just tried to find this definition and failed.
> http://www.w3.org/TR/sparql11-query/#BGPsparql

> Is this what you're looking for?
> -Alex
Received on Wednesday, 20 April 2011 17:37:06 UTC

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