Test 'bind07 - BIND'

• From: Jan Wielemaker <J.Wielemaker@uva.nl>
• Date: Fri, 19 Oct 2012 21:03:33 +0200
• To: public-sparql-dev@w3.org
• Message-ID: <5081A405.4040607@uva.nl>

Hi,

I'm trying to update ClioPatria's SPARQL support to 1.1.  I get this result:

15 ?- query_test('bind07 - BIND').
======================== BEGIN 'bind07 - BIND' =========================
% Parsed "data.ttl" in 0.00 sec; 4 triples
=========================== 'bind07 - BIND' ============================
TYPE: select(names(s,p,o,z))
RESULTS: 8; 4 missed, 8 incorrect
MISSED: <http://example.org/s1> <http://example.org/p> "1"^^xsd:integer 
NULL .
         <http://example.org/s2> <http://example.org/p> "2"^^xsd:integer 
NULL .
         <http://example.org/s3> <http://example.org/p> "3"^^xsd:integer 
NULL .
         <http://example.org/s4> <http://example.org/p> "4"^^xsd:integer 
NULL .
EXTRA:  <http://example.org/s1> <http://example.org/p> "1"^^xsd:integer 
"2"^^xsd:integer .
         <http://example.org/s1> <http://example.org/p> "1"^^xsd:integer 
"3"^^xsd:integer .
         <http://example.org/s2> <http://example.org/p> "2"^^xsd:integer 
"3"^^xsd:integer .
         <http://example.org/s2> <http://example.org/p> "2"^^xsd:integer 
"4"^^xsd:integer .
         <http://example.org/s3> <http://example.org/p> "3"^^xsd:integer 
"4"^^xsd:integer .
         <http://example.org/s3> <http://example.org/p> "3"^^xsd:integer 
"5"^^xsd:integer .
         <http://example.org/s4> <http://example.org/p> "4"^^xsd:integer 
"5"^^xsd:integer .
         <http://example.org/s4> <http://example.org/p> "4"^^xsd:integer 
"6"^^xsd:integer .
========================================================================

The query is this:

PREFIX : <http://example.org/>

SELECT ?s ?p ?o ?z
{
   ?s ?p ?o .
   { BIND(?o+1 AS ?z) } UNION { BIND(?o+2 AS ?z) }
}

and the data is

org:s1 org:p 1 .
org:s2 org:p 2 .
org:s3 org:p 3 .
org:s4 org:p 4 .

Can anyone explain me by which rules the UNION of the two BIND 
operations should
be NULL instead of resulting in two alternative answers?

 Thanks --- Jan

Received on Friday, 19 October 2012 19:03:58 UTC