CommentResponse:DB-11a

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David,

The working group has decided to add a pair of tests based on your example to the SPARQL 1.1 test suite.

test: http://www.w3.org/2009/sparql/docs/tests/data-sparql11/bind/manifest#bind10

query: http://www.w3.org/2009/sparql/docs/tests/data-sparql11/bind/bind10.rq

test: http://www.w3.org/2009/sparql/docs/tests/data-sparql11/bind/manifest#bind11

query: http://www.w3.org/2009/sparql/docs/tests/data-sparql11/bind/bind11.rq

The tests use a nested group graph pattern so as to remove a dependency on GRAPH.

PREFIX : <http://example.org/> 

SELECT ?s ?v ?z
{
  BIND(4 AS ?z)
  {
    # ?z is not in-scope at the time of filter execution.
    ?s :p ?v . FILTER(?v = ?z)
  }
}

Result:

-------------
| s | v | z |
=============
-------------

and

PREFIX : <http://example.org/> 

SELECT ?s ?v ?z
{
  BIND(4 AS ?z)
  # ?z is in scope at the time of filter execution.
  ?s :p ?v . 
  FILTER(?v = ?z)
}

Result:

---------------
| s   | v | z |
===============
| :s4 | 4 | 4 |
---------------

We would be grateful if you would acknowledge that your comment has been answered by sending a reply to this mailing list.

Andy, on behalf of the SPARQL WG