[jira] [Created] (JENA-1126) Make SAMPLE avoid undefs/errors if there are valid choices.

["Andy Seaborne (JIRA)" <ji...@apache.org>]

Andy Seaborne created JENA-1126:
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             Summary: Make SAMPLE avoid undefs/errors if there are valid choices.
                 Key: JENA-1126
                 URL: https://issues.apache.org/jira/browse/JENA-1126
             Project: Apache Jena
          Issue Type: Improvement
          Components: ARQ
            Reporter: Andy Seaborne
            Priority: Minor


>From https://lists.w3.org/Archives/Public/public-sparql-dev/2016JanMar/0005.html

{noformat}SAMPLE({1, 2, error}){noformat} is error currently (for any order). It tends to favour errors as that is checked before a sampling.

It can be 1 or 2. All are right but returning a value if possible is more helpful.



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