- From: Seaborne, Andy <andy.seaborne@hp.com>
- Date: Mon, 5 Nov 2007 10:02:55 -0000
- To: <public-sparql-dev@w3.org>
There are several places where nesting of queries might be useful - in
the CONSTRUCT clause is one place which is convenient syntax
Another is in the pattern itself: by popular demand I added a limited
form:
SELECT ?a
FROM <mybooks.rdf>
{
?b dc:title ?title .
SERVICE <http://sparql.org/books>
{ ?s dc:title ?title . ?s dc:creator ?a }
http://jena.sourceforge.net/ARQ/service.html
With aggregation and GROUP BY, nested SELECT queries in-pattern make a
lot of sense.
Also EXISTS in FILTERs.
Andy
Received on Monday, 5 November 2007 10:03:14 UTC