Re: [Wikidata] [Bigdata-developers] Listing named graphs in Wikidata service

2017-04-21 Thread Aidan Hogan
Hi Stas, On 21-04-2017 15:04, Stas Malyshev wrote: Hi! You agree with me that this query : `select distinct ?g { graph ?g {?s ?p ?o} }` seems to be a valid SPARQL query, but throws an error in WDQS service [1]. It is a valid SPARQL query, but what you're essentially asking is to download

Re: [Wikidata] [Bigdata-developers] Listing named graphs in Wikidata service

2017-04-21 Thread Stas Malyshev
Hi! > You agree with me that this query : > `select distinct ?g { graph ?g {?s ?p ?o} }` seems to be a valid SPARQL > query, but throws an error in WDQS service [1]. It is a valid SPARQL query, but what you're essentially asking is to download whole 1.8b triples in a single query. There's no

Re: [Wikidata] [Bigdata-developers] Listing named graphs in Wikidata service

2017-04-21 Thread Ghislain ATEMEZING
Thanks Stas! It's clear that a user might ask any type of query from an endpoint according to her needs. My concern goes further on whether such queries are valid or not in the underlying RDF graph (in this case BLZ) regarding SPARQL 1.1 spec. You agree with me that this query : `select distinct

Re: [Wikidata] [Bigdata-developers] Listing named graphs in Wikidata service

2017-04-20 Thread Stas Malyshev
Hi! > I wanted to test the use of the queries below to list named graphs (if > any) in wikidata service [a]. I've tried them without success: We do not use any subgraphs in WDQS, so I don't think that query would produce much of a useful result. -- Stas Malyshev smalys...@wikimedia.org