Re: retrieve a list of all distinct/unique resources in a store/repo from Ian Dickinson on 2017-11-21 (public-rdf-ruby@w3.org from November 2017)

From: Ian Dickinson <i.j.dickinson@gmail.com>
Date: Tue, 21 Nov 2017 00:30:14 +0000
To: Anthony Durity <a.durity@umail.ucc.ie>
Cc: W3C Ruby RDF mailing list <public-rdf-ruby@w3.org>
Message-ID: <CAHvAVxb17o65-_gnzJPMg=V8=ZTU4S8OnTVQm83qRyuyMdReQA@mail.gmail.com>

On Mon, Nov 20, 2017 at 4:47 PM, Anthony Durity <a.durity@umail.ucc.ie> wrote:
> What about the SPARQL-y route?
Off the top of my head, untested:

    select distinct ?term {
        { ?term ?p ?o } union
        { ?s ?term ?o } union
        { ?s ?p ?term }

        FILTER (!isBlank(?term))
    }

Probably quite an expensive query on a store of any size, so be careful!

Hth,
Ian

Received on Tuesday, 21 November 2017 00:30:40 UTC