Hello all,
I am trying to execute a SPARQL query in like the one below TopBraid
Composer 3.5.0. The query includes the sp:add() function as follows:
SELECT ?sum
WHERE {
....
[some SPARQL to get ?numberone and ?numbertwo]
.....
?numberone test:has-value ?nonevalue .
?numbertwo rule-test:has-value ?ntwovalue .
LET(?sum := sp:add(?nonevalue, ?ntwovalue)) .
}
The problem is that when I execute this query, the returned ?sum variable is
empty. 'test:has-value' is a datatype property I defined in the test
ontology I am using to play around.
Any help is appreciated, thanks,
Alison
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