Hi Maria,
Virtuoso has a builtin “power()” function as indicated at:
http://docs.openlinksw.com/virtuoso/fn_power.html
<http://docs.openlinksw.com/virtuoso/fn_power.html>
which can be call in a SPARQL query using the “bif:” prefix for invocation with
some thing like:
SELECT bif:power(8,2)
WHERE {?s ?p ?o}
LIMIT 1
Likewise user defined functions can be called using the “sql:” prefix:
http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtTipsAndTricksGuideCustomSPARQLExtensionFunction
<http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtTipsAndTricksGuideCustomSPARQLExtensionFunction>
Best Regards
Hugh Williams
Professional Services
OpenLink Software, Inc. // http://www.openlinksw.com/
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> On 8 Oct 2015, at 19:49, Maria Jackson <maria.jackson....@gmail.com> wrote:
>
> select ?a?b?c?r where{ graph ?graph1{?a ?b <object1>} graph ?graph21{?a ?c
> <object2>} graph ?graph2{?a <time> ?r}} order by asc(?r+(1.1*10^(11))) limit 1
>
> If I write the above expression to denote: ?r + (1.1 x (pow(10,11))) then
> will it be a correct expression in Virtuoso. I am struggling to find how to
> express power in Virtuoso?
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