- 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: >> >> [ā¦] 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 āZā 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