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https://issues.apache.org/jira/browse/JENA-344?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne updated JENA-344:
-------------------------------

    Comment: was deleted

(was: The solution is to add to GraphStore a method for "query this".)
    
> SPARQL Update WHERE masks the real dataset, making evaluation not respect 
> unionGraph.
> -------------------------------------------------------------------------------------
>
>                 Key: JENA-344
>                 URL: https://issues.apache.org/jira/browse/JENA-344
>             Project: Apache Jena
>          Issue Type: Bug
>          Components: ARQ
>    Affects Versions: ARQ 2.9.4
>            Reporter: Andy Seaborne
>            Assignee: Andy Seaborne
>
> If TDB unionGraph is set, it is not seen because the WHERE is evaluated on 
> the graph store (GraphStoreBasic) and that is not recognized by the TDB query 
> engine.  Hence it uses the general purpose query engine, and fails to honour 
> unionGraph.

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