Andy Seaborne created JENA-1507:
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Summary: 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
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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