Re: Dynamic time statements?

That would be my immediate approach, rather than having a mutating  
statement in the store... it also allows one to ask "who's presenting  
tomorrow at 10?" without any changes.

Methinks a store perhaps needs specialised indices for datatypes to  
speed this kind of thing up.

-R

On 25 Jun 2005, at 09:30, Jan Algermissen wrote:

>
> Danny,
>
> why don;tyou just put the current time in the query?
>
> ..where presentation-start <= "2005-06-24T15:05:00Z"
>     and prtesenation-end == null
>
> (forgive me the SQL like query, not yet good enough at sparql).
>
> (This brings up an issue I have with existing RDF databases: all of  
> them seem
> not to be able to recognize literal datatypes for operator  
> 'binding'. For
> example: the <= operator should work differently for dates than for  
> int and yet
> for strings).
>
> If you have a million+ dates, doing the <= operation with a full  
> scan is
> starting to be rediculous.
>
> Thoughts?
>
> Jan