On 5/31/19 11:28 AM, Yuri Astrakhan wrote:
> I actually already implemented support in SPARQL for that, but it
> needs a bit more work to get it properly merged with the Blazegraph
> code.  I had it working for a while as part of Sophox (OSM Sparql).
>
> * docs:  https://wiki.openstreetmap.org/wiki/Sophox#External_Data_Sources
> *
> code:  
> https://github.com/Sophox/wikidata-query-rdf/compare/master...Sophox:tabular
> (see Tabular* files)
> * phabricator discussion about the above
> code:  https://phabricator.wikimedia.org/T181319
>
> Tabular support allows any CSV-style tables to be treated as federated
> sources. With minor changes it should be possible to use mediawiki's
> .tab pages too.


Hi Yuri,


What is the SPARQL Query Service endpoint? Basically, the equivalent of
: http://query.wikidata.org/sparql ??


Kingsley

>
> On Fri, May 31, 2019 at 6:01 PM Daniel Mietchen
> <[email protected]
> <mailto:[email protected]>> wrote:
>
>     Hi,
>     I'm looking into ways to use tabular data like
>     https://commons.wikimedia.org/wiki/Data:Zika-institutions-test.tab
>     in SPARQL queries but could not find anything on that.
>
>     My motivation here is in part coming from the time out limits, and the
>     basic idea here would be to split queries that typically time out into
>     sets of queries that do not time out and - if their results were
>     aggregated - would yield the results that would be expected for the
>     original query would it not time out.
>
>     The second line of motivation here is that of keeping track of how
>     things develop over time, which would be interesting for both content
>     and maintenance queries as well as usage of things like classes,
>     references, lexemes or properties.
>
>     I would appreciate any pointers or thoughts on the matter.
>
>     Thanks,
>
>     Daniel
>
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