* means zero or more
if you do zero steps from your start node :foo to reach a node ?x, this
?x is trivially the start node itself
On 26.09.19 10:18, Andreas Textor wrote:
> Hi all,
>
> I've found a behaviour with a SPARQL path expression that I find
> confusing.
>
> Given a graph that contains just the one triple ":foo :prop :bar" (for
> any prefix :), I execute the following select query:
>
> select * where { :foo :prop* ?x . }
>
> and get both :foo and :bar as results for ?x, even though there is no
> statement :foo :prop :foo. I can even use any other property name/URI
> in the path expression and still get :foo as a result.
>
> I found no hint on the expected behaviour of this case in the SPARQL
> spec, but this seems not right. Can you please give any hints?
>
>
