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https://issues.apache.org/jira/browse/JENA-1203?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne resolved JENA-1203.
---------------------------------
Resolution: Fixed
Fix Version/s: Jena 3.1.1
Not just GROUP BY usage - also varibables in BIND are now checked as for
queries.
> projecting non grouped variable in subquery is incorrectly allowed
> ------------------------------------------------------------------
>
> Key: JENA-1203
> URL: https://issues.apache.org/jira/browse/JENA-1203
> Project: Apache Jena
> Issue Type: Bug
> Environment: sparql.org's validator
> Reporter: Joshua Taylor
> Assignee: Andy Seaborne
> Priority: Minor
> Fix For: Jena 3.1.1
>
>
> Described in this Stack Overflow answer,
> http://stackoverflow.com/a/38104783/1281433 :
> {code}
> SELECT ?sub ?pred ?obj (count(?obj) as ?count)
> WHERE { ?sub ?pred ?obj .
> } GROUP BY ?sub
> {code}
> is illegal, because there are non-grouped variables in the projection (?pred,
> ?obj). However, when this query appears as a subquery, no syntax error is
> reported, as in:
> {code}
> DELETE { ?sub ?pred ?obj . }
> WHERE {
> {SELECT ?sub ?pred ?obj (count(?obj) as ?count)
> WHERE { ?sub ?pred ?obj .
> } GROUP BY ?sub
> } FILTER(?count < 14)
> }
> {code}
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