Hi, I am going through a book on SPARQL which uses ARQ. I am not able to successfully run even the simplest query with the FROM keyword. Here is an example: works fine: PREFIX ab: <http://learningsparql.com/ns/addressbook#> SELECT ?craigEmail WHERE { ab:craig ab:email ?craigEmail . }
but PREFIX ab: <http://learningsparql.com/ns/addressbook#> SELECT ?craigEmail FROM <ex002.ttl> WHERE { ab:craig ab:email ?craigEmail . } does not work -- does not return anything -- just an empty table with the column heading. I have the same problem trying to query a remote data se with Fuseki server. ANY help will be greatly appreciated. Thank you so much. Regards, Neli. Neli P. Zlatareva, PhD Professor of Computer Science Department of Computer Science Central Connecticut State University New Britain, CT 06050 Phone: (860) 832-2723 Fax: (860) 832-2712 Web site: cs.ccsu.edu/~neli/ ________________________________ From: Zlatareva, Neli (Computer Science) Sent: Monday, February 20, 2017 9:34 AM To: users@jena.apache.org Subject: request for help with FROM keyword in ARQ Hi, I am going through a book on SPARQL which uses ARQ. I am not able to successfully run even the simplest query with the FROM keyword. Here is an example: works fine: PREFIX ab: <http://learningsparql.com/ns/addressbook#> SELECT ?craigEmail WHERE { ab:craig ab:email ?craigEmail . } but PREFIX ab: <http://learningsparql.com/ns/addressbook#> SELECT ?craigEmail FROM <ex002.ttl> WHERE { ab:craig ab:email ?craigEmail . } does not work -- does not return anything. ANY help will be greatly appreciated. Thank you so much. Regards, Neli. Neli P. Zlatareva, PhD Professor of Computer Science Department of Computer Science Central Connecticut State University New Britain, CT 06050 Phone: (860) 832-2723 Fax: (860) 832-2712 Web site: cs.ccsu.edu/~neli/
