Re: [Bigdata-developers] problem with UNION?

[Mike P. <mi...@sy...>]

What is this triple pattern for?

?s ?someprop ?l .

Why not just formulate as:

SELECT ?s ?l WHERE {
  {
    ?s <http://www.w3.org/2000/01/rdf-schema#label> ?l
  } UNION {
    ?s <http://xmlns.com/foaf/0.1/name> ?l
  } UNION {
    ?s <http://xmlns.com/foaf/0.1/Person> ?l
  }
  FILTER regex(?l, 'kill', 'i').
}
LIMIT 20

On Mon, Aug 24, 2015 at 2:47 PM, Joakim Soderberg <
joa...@bl...> wrote:

>
> If I execute the following SPARQL query:
>
> SELECT ?s ?l WHERE {  ?s ?someprop ?l .  {  ?s <
> http://www.w3.org/2000/01/rdf-schema#label> ?l  }   . FILTER
> regex(?l,'kill', 'i'). } LIMIT 20
> I retreive the following expected result:
>
> Binding http://data.linkedmdb.org/resource/film/4115
> "Dressed to Kill”
>
> Binding http://data.linkedmdb.org/resource/film/77289
> "Killing Pablo"
>
> Binding http://data.linkedmdb.org/resource/film/928
> "The Killer”
>
> etc...
>
>  But if I combine with UNION
>
> SELECT ?s ?l WHERE {  ?s ?someprop ?l .  {  ?s <
> http://www.w3.org/2000/01/rdf-schema#label> ?l  } UNION { ?s <
> http://xmlns.com/foaf/0.1/name> ?l } UNION { ?s <
> http://xmlns.com/foaf/0.1/Person> ?l } . FILTER regex(?l, 'kill', 'i'). }
> LIMIT 20
>
> I get the unexpected result:
>
> Bindin
> ghttp://musicbrainz.org/artist/00d992b5-d6d1-4130-971b-ab571593f94a#_
> Binding"'Sloppy' Henry"
>
> Binding
> http://musicbrainz.org/artist/025a2a2e-39f8-4bea-a175-2efbfb6016ec#_
> "#/Tau"
>
> Binding
> http://musicbrainz.org/artist/02bec9dc-18f4-46af-b18a-a156b8a0583c#_
> "'Ale'a"
>
> Binding
> http://musicbrainz.org/artist/03bef19b-535e-4b8a-a882-01fcb7324386#_
> [Alexandros]"
>
> Binding
> http://musicbrainz.org/artist/0bb8cd19-f05e-44c4-8955-4cc810de33d3#_
> "-Scaldis-"
>
>
>
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