Re: Size a linked open data set

2016-07-19 Thread Gray, Alasdair J G
c-lod <public-lod@w3.org<mailto:public-lod@w3.org>> Subject: Re: Size a linked open data set Hi Jean-Claude, The "select count(distinct ?r) where { ?r ?p ?l }” query is expensive in terms of database resources and would result in a huge hash table being creating to try and serv

Re: Size a linked open data set

2016-07-13 Thread Jean-Claude Moissinac
B+%3Fs+%3Fp+%5B%5D%7D+%7D=text%2Fhtml=0=on > > > -Original Message- > From: Hugh Williams [mailto:hwilli...@openlinksw.com] > Sent: Wednesday, July 06, 2016 3:15 PM > To: Jean-Claude Moissinac <jean-claude.moissi...@telecom-paristech.fr> > Cc: public-lod <public-lod@

RE: Size a linked open data set

2016-07-06 Thread John Walker
+%3Fs+%3Fp+%5B%5D%7D+%7D=text%2Fhtml=0=on -Original Message- From: Hugh Williams [mailto:hwilli...@openlinksw.com] Sent: Wednesday, July 06, 2016 3:15 PM To: Jean-Claude Moissinac <jean-claude.moissi...@telecom-paristech.fr> Cc: public-lod <public-lod@w3.org> Subject: Re: Size a

Re: Size a linked open data set

2016-07-06 Thread Hugh Williams
Hi Jean-Claude, The "select count(distinct ?r) where { ?r ?p ?l }” query is expensive in terms of database resources and would result in a huge hash table being creating to try and service it which is causing it to timeout based on the settings on the instance by whoever maintains it. On

Re: Size a linked open data set

2016-07-06 Thread Nandana Mihindukulasooriya
Dear Jean-Claude, I'm not sure exactly what you meant by the "number of distinct resources in a dataset". Is it "the total number of distinct subjects" including both IRIs and blank nodes? It seems your first query counts that. Your second query seems to count the number of triples in the