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https://issues.apache.org/jira/browse/MARMOTTA-651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15395541#comment-15395541
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Rob Atkinson commented on MARMOTTA-651:
---------------------------------------
getting closer - works with the example supplied but not with a UNION clause:
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
CONSTRUCT { ?s a ?o. ?s rdfs:label ?l }
WHERE {
{ ?s a ?o . }
UNION
{ ?s rdfs:label ?l .}
} LIMIT 10
it now returns an empty graph with the prefixes defined - before it was a
completely empty result.
> CONSTRUCT Queries return no results
> -----------------------------------
>
> Key: MARMOTTA-651
> URL: https://issues.apache.org/jira/browse/MARMOTTA-651
> Project: Marmotta
> Issue Type: Bug
> Components: KiWi Triple Store
> Affects Versions: 3.3.0
> Environment: Kiwi with postgres backend - tested with SPARQL wrapper
> - Sesame returns results, kiwi returns empty set
> Reporter: Rob Atkinson
> Assignee: Sergio Fernández
> Fix For: 3.4.0
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> a SPARQL CONSTRUCT statement against the KIwi returns empty result sets.
> (even when equivalent SELECT statements return results. )
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