FWIW, I'd be happy to turn WDQ into a "redirect" that takes WDQ commands, uses the WDQ-to-SPARQL translator, runs SPARQL, and returns the results in WDQ format. THis would be for backwards compatibility only. I hope people will start using SPARQL instead of WDQ where possible, and I will add SPARQL options to my tools where appropriate over time.

As it is, some queries (e.g. large result sets like "all humans without image") do not work on SPARQL yet. I will try to keep WDQ running until all WDQ queries can run as SPARQL as well.

On Tue, Sep 8, 2015 at 9:27 AM Markus Krötzsch <markus@semantic-mediawiki.org> wrote:

Great, congratulations to getting this deployed! Now we can start
developing downstream applications :-)

Markus

P.S. @Gerard: it is not meant to move Magnus's query tools to SPARQL. He
could of course do this, if he thinks it is easier for him regarding
future maintenance/feature extensions. But since his tools are working
well, there is no reason to change the underlying technology. In the
end, anything that works is fine. Having other solutions for specific
query features can always be a good idea. SPARQL supports very powerful
queries (like "find all statements with references based on 'Le
Figaro'"). More specialised query services that do not support all of
this can achieve higher performance. This is why more specialised
solutions such as WDQ can also have advantages. Moreover, no matter
which query service is used in the backend, it always makes sense to
develop more user interfaces that simplify query construction.

On 08.09.2015 00:29, Dan Garry wrote:
> The Discovery Department at the Wikimedia Foundation is pleased to
> announce the release of the Wikidata Query Service
> <https://www.mediawiki.org/wiki/Wikidata_query_service>! You can find
> the interface for the service at https://query.wikidata.org.
>
> The Wikidata Query Service is designed to let users run queries on the
> data contained in Wikidata. The service uses SPARQL
> <https://en.wikipedia.org/wiki/SPARQL> as the query language. You can
> see some example queries in the user manual
> <https://www.mediawiki.org/wiki/Wikidata_query_service/User_Manual>.
>
> Right now, the service is still in beta. This means that our goal
> <https://www.mediawiki.org/wiki/Wikimedia_Engineering/2015-16_Q2_Goals#Wikidata_Query_Service> is
> to monitor of the service usage and collect feedback about what people
> think should be next. To do that, we've created the Wikidata Query
> Service dashboard <https://searchdata.wmflabs.org/wdqs/> to track usage
> of the service, and we're in the process
> <https://phabricator.wikimedia.org/T111403> of setting up a feedback
> mechanism for users of the service. Once we've got monitored the usage
> of the service for a while and got user feedback, we'll decide on what's
> next for development of the service.
>
> If you have any feedback, suggestions, or comments, please do send an
> email to the Discovery Department's public mailing list,
> wikimedia-search@lists.wikimedia.org
> <mailto:wikimedia-search@lists.wikimedia.org>.
>
> Thanks,
> Dan
>
> --
> Dan Garry
> Lead Product Manager, Discovery
> Wikimedia Foundation
>
>
> _______________________________________________
> Wikidata mailing list
> Wikidata@lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/wikidata
>


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