- From: Steve Harris <S.W.Harris@ecs.soton.ac.uk>
- Date: Tue, 15 Feb 2005 17:12:47 +0000
- To: "'RDF Data Access Working Group'" <public-rdf-dawg@w3.org>
On Tue, Feb 15, 2005 at 05:02:26PM +0000, Andy Seaborne wrote: > 3/ Just OPTIONAL, not [] > > (note that OPTIONAL can take a {} pattern or a plain triple pattern - > restricting to just {} would be OK). Quick predication: this reminds me of the popular C typo relating if to blocks, ie. the difference between SELECT ?name ?email ?phone WHERE (?x e:worksFor <e:companyX>) OPTIONAL{(?x e:emailAddress ?email) (?x e:phoneNumber ?phone)} and SELECT ?name ?email ?phone WHERE (?x e:worksFor <e:companyX>) OPTIONAL (?x e:emailAddress ?email) (?x e:phoneNumber ?phone) I suspect it will catch people out the same way. Not a huge problem though. - Steve
Received on Tuesday, 15 February 2005 17:12:52 UTC