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https://issues.apache.org/jira/browse/JENA-1507?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16398714#comment-16398714
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ASF subversion and git services commented on JENA-1507:
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Commit 8a64ffeef483df37bcbd313ada28104a945d2027 in jena's branch
refs/heads/master from [~andy.seaborne]
[ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=8a64ffe ]
JENA-1507: No rows when no match if GROUP BY used
> GROUP BY and aggregates when there are no matching of the WHERE pattern.
> ------------------------------------------------------------------------
>
> Key: JENA-1507
> URL: https://issues.apache.org/jira/browse/JENA-1507
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ
> Affects Versions: Jena 3.6.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Major
> Fix For: 3.7.0
>
>
> There are two bugs in ARQs handling of grouping when there are no results in
> the WHERE clause.
> When there is a GROUP BY, the outcome should be no rows.
> * JENA-1487
> * [users list
> discussion|https://lists.apache.org/thread.html/72c2045e639c589880619443beafec5be963733e0f9f0887e134d467@%3Cusers.jena.apache.org%3E]
> When there is no GROUP BY, no aggregates, and no pattern match, the result
> should be one row of no columns; when there is no GROUP BY, the result is
> always one row. It returns zero rows (v3.6.0 and before).
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