how does select/project work with extra variables?

Bob write:

First, I am assuming that the
following query returns no bindings:

SELECT ?x ?y
  WHERE  { ?book dc10:title ?x }
I shouldn't since it doesn't refer to OPTIONAL or UNION within the query, and the
spec cites those as prerequisites for allowing unbound values.

but I don't see it that way... my reading of
is that SELECT (i.e. projection) doesn't cause solutions
to get rejected. The ?y is just noise.

Would somebody please add this as a test case? EricP?

Dan Connolly, W3C
D3C2 887B 0F92 6005 C541  0875 0F91 96DE 6E52 C29E

Received on Monday, 21 March 2005 22:43:24 UTC