- From: Alexandre Passant <alexandre.passant@deri.org>
- Date: Wed, 31 Mar 2010 11:11:57 +0100
- To: Andy Seaborne <andy.seaborne@talis.com>
- Cc: SPARQL Working Group <public-rdf-dawg@w3.org>
On 31 Mar 2010, at 09:13, Andy Seaborne wrote:
> Should the syntax of MINUS be like UNION with {} on the left-hand side
>
> { { ?s a foaf:Person
> ?s foaf:name ?name
> }
> MINUS
> { ?s foaf:knows ?other }
> }
>
> or without:
>
> { ?s a foaf:Person .
> ?s foaf:name ?name .
> MINUS { ?s foaf:name ?name }
> }
My preference for the second one, saves a few editing process when adding / removing a MINUS clause from an existing query.
And I see MINUS more as a "negative FILTER" so it makes sense to me not to have these {} to the pattern before.
Alex.
>
> Either works from a grammar point of view.
>
> Andy
>
--
Dr. Alexandre Passant
Digital Enterprise Research Institute
National University of Ireland, Galway
:me owl:sameAs <http://apassant.net/alex> .
Received on Wednesday, 31 March 2010 10:12:32 UTC