SAMPLE is aggregate function that returns an arbitrary value from the multiset passed to it.
Note: Using the "sql:" prefix is mandatory for this aggregate.
any
SQL>SPARQL SELECT (sql:SAMPLE(?nick)), (sql:SAMPLE(?interest)) WHERE { ?p a foaf:Person . ?p foaf:nick ?nick. ?p foaf:interest ?interest. } callret-0 callret-1 VARCHAR VARCHAR ________________________________________________ dr. Jones http://purl.org/rss/1.0/ No. of rows in result: 1