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https://issues.apache.org/jira/browse/JENA-2005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17241743#comment-17241743
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Andy Seaborne commented on JENA-2005:
-------------------------------------
The xsd:decimal change between 1.0 and 1.1 is a nusiense - it is the only such
change though.
To be robust to all cases and consider values, you can use FILTER
{noformat}
:s :p ?o .
FILTER (?o = 4)
{noformat}
or to be specific to decimals:
{noformat}
:s :p ?o .
FILTER (?o = 4 && datatype(?o) = xsd:decimal)
{noformat}
> SPARQL does not correctly handle xsd:decimal datatypes
> ------------------------------------------------------
>
> Key: JENA-2005
> URL: https://issues.apache.org/jira/browse/JENA-2005
> Project: Apache Jena
> Issue Type: Question
> Components: Fuseki
> Affects Versions: Jena 3.16.0
> Reporter: Steve Baskauf
> Priority: Minor
>
> In performing a federated query at the Wikidata Query Service
> ([https://query.wikidata.org/sparql),] I bound the object of the triple:
>
> <http://www.wikidata.org/entity/Q97446840>
> <http://www.wikidata.org/prop/direct/P2896> "4"^^xsd:decimal.
>
> as it was provided by the SERVICE endpoint. I also bound the value of the
> triple:
>
> <http://www.wikidata.org/entity/Q97446840>
> <http://www.wikidata.org/prop/direct/P2896> "4.0"^^xsd:decimal.
>
> which was present in the local dataset. (The value was originally loaded from
> Turtle as the number 4.0 (not a datatyped literal).
> When I performed a MINUS operation between the bound values from the SERVICE
> endpoint and the bound values from the local triplestore, this value should
> have been removed from the result set because according to the XML schema
> Recommendation [https://www.w3.org/TR/xmlschema-2/#decimal] both "4" and
> "4.0" are valid lexical representations ("If the fractional part is zero, the
> period and following zero(es) can be omitted.") of the same decimal number.
> However, Fuseki did not recognize the two values as identical, which is an
> error.
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