I have no idea why they left it out. Many implementations have extensions that support count and group so don't loose hope yet.
Jena's ARQ has one: http://seaborne.blogspot.com/2007/09/counting-and-group-by.html David Huynh wrote: > That's very, very unfortunate. Do you know why those aggregate functions > are not supported? > > Without aggregation performed at the source of the data, more data than > necessary has to be transfered over to the sink. The larger the data set > (the more useful aggregation is), the larger the transfer. The lack of > support for aggregation pretty much cripples any advanced browsing > functionality on top of SPARQL data sources. > > The first draft of SPARQL was in October 2004 [1]. I remember informally > suggesting adding aggregate functions to it in Summer/Fall 2006. > > David > [1] http://www.w3.org/TR/2004/WD-rdf-sparql-query-20041012/ > > > _______________________________________________ General mailing list [email protected] http://simile.mit.edu/mailman/listinfo/general
