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https://issues.apache.org/jira/browse/JENA-627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13884539#comment-13884539
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Andy Seaborne commented on JENA-627:
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JENA-628 fixes this example but not the general case.
It is not TDB specific ({{--set 'arq:optFilterPlacementBGP=false'}} recreates).
> SPARQL query evaluation seems to be broken
> ------------------------------------------
>
> Key: JENA-627
> URL: https://issues.apache.org/jira/browse/JENA-627
> Project: Apache Jena
> Issue Type: Bug
> Components: Fuseki
> Affects Versions: TDB 1.0.1
> Reporter: Michael Brunnbauer
> Assignee: Andy Seaborne
>
> This query - used on a non-empty default graph - will return no results.
> It will work if you remove the FILTER(1). With TDB 1.0.0, both queries would
> return a result.
> {noformat}
> select ?s ?p ?o where {
> { ?s ?p ?o } UNION { FILTER(0) }
> FILTER(1)
> } limit 1
> {noformat}
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