- From: james anderson <james@dydra.com>
- Date: Tue, 18 Apr 2017 16:42:04 +0000
- To: public-sparql-exists@w3.org
good evening;
> On 2017-04-18, at 18:32, james anderson <james@dydra.com> wrote:
>
> good evening;
>
>> On 2017-04-18, at 17:50, Andy Seaborne <andy.seaborne@topquadrant.com> wrote:
>>
>> […]
>
> given
>>> { VALUES ?junk { } BIND ( ?this AS ?that ) ?that a ex:bad . }
>>
>> Similar, not same; there is an inner Z the start of the graph pattern. "Inner" in the sense that it ends up most nested in the algebra as the group graph pattern builds from left to right. The {} is part of the VALUES expression.
>>
>> (join
>> (extend ((?that ?this))
>> (join
>> (Z)
>> (table empty)))
>> (bgp (triple ?that rdf:type ex:bad)) )
>
> which form yields the unit table?
i see, later in your text, your “table empty” is not the same as a “unit table”.
my confusion.
>
>
> best regards, from berlin,
> ---
> james anderson | james@dydra.com | http://dydra.com
>
>
>
>
>
>
Received on Tuesday, 18 April 2017 16:42:42 UTC