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Posted to dev@jena.apache.org by "Stephen Owens (JIRA)" <ji...@apache.org> on 2017/04/27 22:05:04 UTC

[jira] [Created] (JENA-1332) Possibly incorrect results from SPARQL with union and filter not exists

Stephen Owens created JENA-1332:
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             Summary: Possibly incorrect results from SPARQL with union and filter not exists
                 Key: JENA-1332
                 URL: https://issues.apache.org/jira/browse/JENA-1332
             Project: Apache Jena
          Issue Type: Bug
          Components: ARQ
    Affects Versions: Jena 3.2.0
            Reporter: Stephen Owens


The test case attached to this issue shows an unexpected SPARQL result. We found the result while optimizing some SPARQL that had poor performance with some OPTIONAL clauses. We thought the optimization was the same as the original but in version 3.2.0 the result differs, it worked in 3.0.0. 



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