[jira] [Commented] (MARMOTTA-640) multiple UNIONs not handled

["Sergio Fernández (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MARMOTTA-640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15314242#comment-15314242 ] 

Sergio Fernández commented on MARMOTTA-640:
-------------------------------------------

The problem looks to be when mapping to SQL more than two {{UNION}}.

I lowered the priority of the issue accordingly.

> 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, 3.4.0
>            Reporter: Rob Atkinson
>            Priority: Minor
>
> 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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