AndyS questions

AndyS answers

• What does SELECT FROM DEFAULT actually do?
• How to extract a substring using a regular expression?
• How to know if an RDF graph is lean?
• The DELETE/INSERT operation can be used to remove triples containing blank nodes: how?
• Sparql insert data not working
• Alternatives to SPARQL query with lots of UNIONs
• Sparql - Concatenation fails if any one variable is not bound
• SPARQL recursive ancestor query
• Do URIs used in RDF need to be dereferenceable in Jena?
• Testing the presence of a predicate in SPARQL