ISSUE-11: Implicit vs explicit GROUPing

Implicit vs explicit GROUPing

State:
CLOSED
Product:
Raised by:
Axel Polleres
Opened on:
2009-05-07
Description:
Related Actions Items:
No related actions
Related emails:
  1. Re: ungrouped variables used in projections - Further implications? (from axel.polleres@deri.org on 2010-08-25)
  2. Re: More aggregates test cases (from axel.polleres@deri.org on 2010-08-25)
  3. Re: More aggregates test cases (from andy.seaborne@epimorphics.com on 2010-08-25)
  4. More aggregates test cases (was: ungrouped variables used in projections) (from axel.polleres@deri.org on 2010-08-25)
  5. Re: ungrouped variables used in projections (from axel.polleres@deri.org on 2010-08-25)
  6. Re: ungrouped variables used in projections (from lee@thefigtrees.net on 2010-08-24)
  7. Re: ungrouped variables used in projections (from steve.harris@garlik.com on 2010-08-24)
  8. Re: ungrouped variables used in projections (from lee@thefigtrees.net on 2010-08-24)
  9. SPARQL WG Agenda - Tues. Nov. 17, 2009 (from lee@thefigtrees.net on 2009-11-16)
  10. Views on the outcomes of F2F (from andy.seaborne@talis.com on 2009-11-10)
  11. just before we start... agenda now reflecting last TC's agreements (from axel.polleres@deri.org on 2009-11-02)
  12. Checking in on our issues (from lee@thefigtrees.net on 2009-09-28)
  13. Implicit vs. Explicit Grouping (Aggregates) (from lee@thefigtrees.net on 2009-05-25)

Related notes:

Sub-issue here:

Do we allow some variables not grouped/aggregated and what is the behavior of that. E.g. a variation of Andy's example (http://jena.hpl.hp.com/~afs/SPARQL-F2F1-AFS.pdf, slide 9):

SELECT ?name
{
{ SELECT ?x
{ ?x foaf:knows?y . ?z a foaf:Person}
GROUP BY ?x
HAVING (count(?y) > 10)
}
?x foaf:name?name
}

Axel Polleres, 7 May 2009, 15:07:08

Sub-issue here:

Do we allow some variables not grouped/aggregated and what is the behavior of that. E.g. a variation of Andy's example (http://jena.hpl.hp.com/~afs/SPARQL-F2F1-AFS.pdf, slide 9):

SELECT ?name
{
{ SELECT ?x
{ ?x foaf:knows?y . ?z a foaf:Person}
GROUP BY ?x
HAVING (count(?y) > 10)
}
?x foaf:name?name
}

Axel Polleres, 7 May 2009, 15:07:37

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