- From: Jagannathan Srinivasan <jagannathan.srinivasan@oracle.com>
- Date: Wed, 31 Aug 2005 21:47:14 -0400
- To: public-rdf-dawg-comments@w3.org
- CC: jags Srinivasan <Jagannathan.Srinivasan@oracle.com>
Hi,
Can you clarify the query semantics for the following cases:
A SPARQL query can specify RDF dataset as follows:
FROM d1
FROM d2
...
FROM dn
FROM NAMED g1
FROM NAMED g2
...
FROM NAMED gm
Then the query may use graph clause in several ways:
1) GRAPH gx (explicit naming) => BUT, gx may not exist in {g1, g2, ...,
gm}, then what is the expected behavior?
2) GRAPH ?g (variable-based naming)
?g may get instantiated from global (that is not enclosed inside a
GRAPH clause) graph-pattern to a value gx (say)
BUT gx may not be a member of {g1, g2, ..., gm}, then what is the
expected behavior?
Thanks,
Jags
Received on Thursday, 1 September 2005 01:47:23 UTC