On 28/09/13 09:58, Michael Brunnbauer wrote:
hi all
I wonder if something is wrong with this query or with Fuseki 0.2.5.
All variables except ep2 are bound in the result:
Yes - that's what I expect.
select ?ep ?ep2 ?s ?p ?o where {
BIND ('X' as ?ep)
{
select (?ep as ?ep2) ?s ?p ?o where { ?s ?p ?o } limit 1
}
}
I tried it also with BIND (?ep as ?ep2) instead of select (?ep as ?ep2) but
without success.
Query evaluation is functional - execute the inner parts and combine
them together. (1+2) * (4+5) is calc 1+2 and calc 4+5 then pass 3 and 9
to * to get 27.
Inner part:
BIND ('X' as ?ep)
One row, ?ep is 'X'
Inner part:
select (?ep as ?ep2) ?s ?p ?o where { ?s ?p ?o } limit 1
?ep is unbound so ?ep2 is unbound.
now join them, ?ep is bound on one side (from BIND) not on the other
(from SELECT).
Andy
Regards,
Michael Brunnbauer
Andy
