Re: Q: ISSUE-41 bNode semantics

On 19 May 2011, at 14:10, David McNeil wrote:

> Furthermore with the NULL values present in the Direct Mapping triples it is possible (albeit cumbersome) to write SPARQL queries that take into account the SQL semantics of NULL.

I wouldn't say that my proposal is "cumbersome": just add a is-not-null test for each join variable. :-)


Received on Thursday, 19 May 2011 14:27:17 UTC