- From: Fred Zemke <fred.zemke@oracle.com>
- Date: Tue, 06 Jun 2006 20:26:36 +0000
- To: public-rdf-dawg@w3.org
A.7 Grammar There are no commas in the SELECT list. This looks like a poor design because it will be an obstacle to allowing arbitrary expressions in the SELECT list in a future version. I asked for arbitrary expressions in a previous round of comments, and was told that this was being deferred to the future. That is fine, but I want to insure that the ground is ready for that extension. Strictly speaking, commas may be unnecessary since SELECT ?a ?b + ?c can be parsed. The issue is that this is not very friendly to the user because having commas to separate expressions is an opportunity for the parser to catch typos. I note that our syntax for function calls requires commas between successive expressions, even though there too they are not strictly necessary. ORDER BY also lacks commas, so if we add them to SELECT we should probably add them to ORDER BY. Fred
Received on Tuesday, 6 June 2006 22:04:15 UTC