Lorenz Bühmann created JENA-1327:
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Summary: HAVING clause accepts projected expression
Key: JENA-1327
URL: https://issues.apache.org/jira/browse/JENA-1327
Project: Apache Jena
Issue Type: Question
Components: ARQ
Affects Versions: Jena 3.2.0, Jena 3.1.1
Reporter: Lorenz Bühmann
Priority: Minor
I'm wondering whether the SPARQL parser is correct with accepting the following
query:
{noformat}
PREFIX dbo: <http://purl.org/dc/elements/1.1/>
SELECT (COUNT(?work) AS ?tw) ?author
WHERE
{ ?work dbo:author ?author }
GROUP BY ?author
HAVING ( ?tw > 3 )
{noformat}
According to the
[specs|https://www.w3.org/TR/sparql11-query/#sparqlHavingClause], I would
assume that this is not allowed and one has to use
{noformat}
PREFIX dbo: <http://purl.org/dc/elements/1.1/>
SELECT (COUNT(?work) AS ?tw) ?author
WHERE
{ ?work dbo:author ?author }
GROUP BY ?author
HAVING ( COUNT(?tw) > 3 )
{noformat}
But as always, I might misunderstand the specs.
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