Ying, this might sound like a stupid question, but if you want SQL
features why not pull your CSV into a relational DB table then R2RML it
into RDF (since mappings will allow you arbitrary SQL)?
Barry
On 12/12/2012 21:08, Ying Ding wrote:
Hi,
I am looking for a open source software to convert csv file to RDF
based on one pre-defined ontology. Also, this converter should support
complicated SQL queries (e.g., Group BY query and IF/THEN/ELSE query)
while defining the mapping between csv to our pre-defined ontology.
thanks
ying