Sounds good. But we are getting into implementation-specific functions. True? (text:query is, I suppose, ARQ-specific).
On Wed, Mar 26, 2014 at 1:05 PM, Andy Seaborne <[email protected]> wrote: > On 26/03/14 10:01, Olivier Rossel wrote: > >> Hello. >> >> I have a question about matching strings in SPARQL, whatever the lang tag. >> As far as I understand, the only way to do that is to let SPARQL bind a >> ?variable >> and then FILTER for equality of its str() against my matching string >> value. >> > > In SPARQL 1.1, yes. > > > For example: >> >> SELECT ?person ?name >> WHERE >> { >> ?person foaf:name ?name . >> FILTER (str(?name) = "Jackie Chan") . >> } >> >> Is it really the only way? >> Won't it perform really bad? >> Especially compared to the case where you know the lang tag: >> >> >> SELECT ?person ?name >> WHERE >> { >> ?person foaf:name "Jackie Chan"@en >> } >> >> > > This is what a text index is good for. Get some limited possibilities and > test accurately in SPARQL: > > (hurrily...) > > ?x text:query ('Jackie Chan') . > ?x foaf:name ?name . > > FILTER (str(?name) = "Jackie Chan") . > > Andy > > >
