- From: Andy Seaborne <andy@apache.org>
- Date: Sat, 25 Jun 2016 16:24:40 +0100
- To: public-rdf-dawg-comments@w3.org
On 23/06/16 23:20, Peter F. Patel-Schneider wrote:
> errata-query-10 does not suggest how to change the SPARQL 1.1 Query
> Language specification.
One purpose of the errata document is to capture issues for a future
working group. The criteria for inclusion is as a suggestion something
needs looking at in the next WG, not that that a detailed fix is available.
Andy
>
> The referenced discussion is no help, as it suggests only changing
> occurences in basic graph patterns, which would actually make EXISTS work
> worse than it currently does, as substitution for ?n would not happen in the
> inner FILTER in the example in Section 8.3.3
>
> PREFIX : <http://example.com/>
> SELECT * WHERE {
> ?x :p ?n
> FILTER NOT EXISTS {
> ?x :q ?m .
> FILTER(?n = ?m)
> }
> }
>
> This leads to results counter to the discussion around this example.
>
> Both suggestions in erratum are unspecific. The suggestion in the
> referenced discussion does not propose a workable solution.
>
> The erratum should be rescinded until a suitable replacement can be crafted.
>
>
> Peter F. Patel-Schneider
> Nuance Communications
>
>
>
Received on Saturday, 25 June 2016 15:25:12 UTC