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
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@
+%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
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
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
Hello
In my work, I need to know the number of distinct resources in a dataset.
For example, with dbpedia-fr, I'm trying
select count(distinct ?r) where { ?r ?p ?l }
And I'm always getting a timeout error message
While with
select count(?r) where { ?r ?p ?l }
I'm getting
185404575
Is it a good