The use of GROUP BY in #selectPath query is causing severe peformance problems in RDF4J 2.3.2

peterjohnlawrence / com.inova8.odata2sparql.v4

Part of the overall odata2sparql solution, this odata2sparql.v4 module containing the olingo4 dependencies. In other words specifically for odata v4

http://inova8.com/bg_inova8.com/offerings/odata2sparql/

Apache License 2.0

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The use of GROUP BY in #selectPath query is causing severe peformance problems in RDF4J 2.3.2 #87

Closed peterjohnlawrence closed 6 years ago

peterjohnlawrence commented 6 years ago

Can GROUP BY be removed depending only on the DISTINCT. It looks like RDF4J is grouping across the entire triplestore even though only the first value is necessary as there are no aggregate functions