- From: Peter F. Patel-Schneider <pfpschneider@gmail.com>
- Date: Thu, 13 Apr 2017 14:11:36 -0700
- To: james anderson <james@dydra.com>, public-sparql-exists@w3.org
I'm not sure what you are asking, but the issue is that a
Join(Z,empty multiset)
is simplified to
empty multiset
peter
On 04/13/2017 02:04 PM, james anderson wrote:
> good evening;
>
>> On 2017-04-13, at 21:50, Peter F. Patel-Schneider <pfpschneider@gmail.com> wrote:
>>
>> […] This removes the
>> initial empty BGP in many group graph patterns, including
>> { VALUES ?junk { } BIND ( ?this AS ?that ) ?that a ex:bad . }
>> resulting in
>> Join( Extend( empty multiset, ?that, ?this ), BGP( ?that a ex:bad ) )
>
> are these the same with respect to “Z” and simplification?
>
> { VALUES ?junk { } BIND ( ?this AS ?that ) ?that a ex:bad . }
>
> and
>
> { { } BIND ( ?this AS ?that ) ?that a ex:bad . }
>
> best regards, from berlin,
>
>
>
>
Received on Thursday, 13 April 2017 21:12:10 UTC