Tests for grouping and aggregates

Jeen and I have written some tests for grouping and aggregates when the 
WHERE clause does not match anything.

Eclipse RDF4J and Apache Jena agree with the new tests.

   https://github.com/afs/sparql-group-agg

These replace the aggregates/agg-empty-group test with 4 new tests: one 
each for MAX and COUNT cases and with and without GROUP BY.

As a PR to rdf-tests:

   https://github.com/w3c/rdf-tests/pull/61

SPARQL errata discussion:
https://lists.w3.org/Archives/Public/public-sparql-dev/2020AprJun/0000.html

     Jeen
     Andy

Received on Saturday, 2 May 2020 08:35:25 UTC