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https://issues.apache.org/jira/browse/MARMOTTA-640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15339328#comment-15339328
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ASF subversion and git services commented on MARMOTTA-640:
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Commit b1b899c5168a8e364a183329bc833ae8606513bf in marmotta's branch
refs/heads/develop from [~wikier]
[ https://git-wip-us.apache.org/repos/asf?p=marmotta.git;h=b1b899c ]
MARMOTTA-640: aliased NULL projections to avoid issues evaluating queries on h2
> multiple UNIONs not handled
> ---------------------------
>
> Key: MARMOTTA-640
> URL: https://issues.apache.org/jira/browse/MARMOTTA-640
> Project: Marmotta
> Issue Type: Bug
> Components: KiWi Triple Store
> Affects Versions: 3.3.0
> Reporter: Rob Atkinson
> Assignee: Sergio Fernández
> Priority: Minor
> Labels: sparql, sql
> Fix For: 3.4.0
>
>
> fails with query below - but removing any of the union clauses works
> {code}
> PREFIX dcterms: <http://purl.org/dc/terms/>
> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
> PREFIX void: <http://rdfs.org/ns/void#>
> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
> PREFIX lid: <http://id.sirf.net/def/schema/lid/>
> SELECT *
> WHERE
> { { { <http://resources.opengeospatial.org/def/voc/examples/mdg> rdf:type
> ?___0 }
> OPTIONAL
> { { ?___0 rdfs:label ?___1 } }
> }
> UNION
> { <http://resources.opengeospatial.org/def/voc/examples/mdg> rdfs:label
> ?___2 }
> UNION
> { <http://resources.opengeospatial.org/def/voc/examples/mdg>
> void:sparqlendpoint ?___10 }
> }
> {code}
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