Re: minor technical on 10.1 Solution sequences and result forms [OK?] from Seaborne, Andy on 2006-03-21 (public-rdf-dawg-comments@w3.org from March 2006)

From: Seaborne, Andy <andy.seaborne@hp.com>
Date: Tue, 21 Mar 2006 10:20:08 +0000
To: Fred Zemke <fred.zemke@oracle.com>
CC: public-rdf-dawg-comments@w3.org
Message-ID: <441FD358.9010803@hp.com>

Fred Zemke wrote:
> 10.1 Solution sequences and result forms
> It says that projection is always performed before ordering.
> This means that it is not possible to obtain a sequence of results
> that is ordered by some variable that is projected away.  It would
> be preferable to perform ordering before projecting.  My prefered
> order of modifiers would be: ORDER BY, project, DISTINCT, LIMIT, OFFSET.
> 
> Fred
> 

Fred,

I've corrected 10.1 : it now says:

1. ORDER BY: put the solutions in order
2. Projection
3. DISTINCT: ensure solutions in the sequence are unique.
4. LIMIT: restrict the number of solutions processed for query results
5. OFFSET: control where the solutions processed start from in the overall 
sequence of solutions.

Please let us know if this responds to your comment,

	Andy

Received on Tuesday, 21 March 2006 10:20:25 UTC