Hi Ivan, hi Hugh,
ok, I wasn't aware of the need for additional indices for multiple graph RDF
queries. I solved my issue by creating two bitmap indices (P,O,G,S) and
(P,S,O,G).
Thanks for your help,
Mirko
Am 22.11.2009 um 06:34 schrieb Ivan Mikhailov:
> Hello Mirko,
>
> What indexes do you
Hello Mirko,
What indexes do you have? You may need at least bitmap SPOG index for
the first query. The default layout (only two indexes) works for queries
taht have all graphs fixed (or calculated before use), but not for all
other queries.
Best Regards,
Ivan Mikhailov
OpenLink Software
http://
Hi Mirko,
Running similar queries with ORDER BY and LiMIT query modifier against my
Virtuoso 5.0.12 build and do not observe the behaviour you report. What
Virtuoso release are you testing against ?
Also, can you provide the output of running the explain () function which
describes the query
Hi,
I have a SPARQL query which performes well when querying a single graph but
"the estimated execution time exceeds the time limit of 400 (secs)" when
querying two graphs. This is also true if the second graph is empty. Why is
this the case / how can I fix this?
Query A (performes well):
SEL
