Just a reminder,
We are starting to phase out the table, it will stop getting updated from
end of the next week and will be dropped two or three weeks from now, the
wb_terms table now have term_full_entity_id instead which is not replicated
to labs yet [0] but it will very soon.


[0]: https://phabricator.wikimedia.org/T167114

Best

>
> From: Magnus Manske <[email protected]>
> Date: Thu, Jun 1, 2017 at 5:21 PM
> Subject: Re: [Wikidata-tech] Breaking change: "wb_entity_per_page" table
> will not be updated and replicated on ToolLabs anymore
> To: Daniel Kinzler <[email protected]>, Wikidata technical
> discussion <[email protected]>
>
>
> The original code predated SPARQL, so I have to change it anyway. The
> example I gave is small enough for SPARQL, but others will not be.
>
> On Thu, Jun 1, 2017 at 4:11 PM Daniel Kinzler <[email protected]>
> wrote:
>
>> Am 01.06.2017 um 16:59 schrieb Magnus Manske:
>> > As an example from my BEACON tool, I want all properties that have a
>> formatter
>> > property, with English label. That SQL is now:
>> >
>> > SELECT DISTINCT page_title,term_text FROM pagelinks,page,wb_terms WHERE
>> > page_namespace=120 AND substr(page_title,2)=term_entity_id and
>> > term_entity_type='property' and term_language='en' and
>> term_type='label' and
>> > pl_from=page_id and pl_title='P1630' and pl_namespace=120 and
>> > pl_from_namespace=120 ORDER BY term_text
>> >
>> > Note the "substr". My first attempt was "page_title=concat('Q',term_en
>> tity_id)",
>> > but that took forever.
>> >
>> > If we indeed get a full entity ID=page title column for wb_terms, and
>> > for wb_items_per_site etc., that would at least fix the on-the-fly
>> compute. I
>> > shall thus wait with code updates until I get the full story, and not
>> just
>> > piece-by-piece...
>>
>> There is currently no plan to put the full ID into wb_items_per_site or
>> wb_property_info, because these tables are bound to a specific entity
>> type.
>> Whether we want to do this would be a whole new discussion.
>>
>> For what you are doing there, it's  probably a lot easier to use the query
>> service. SPARQL:
>>
>> SELECT DISTINCT ?property ?propertyLabel
>> WHERE {
>>     ?property a wikibase:Property .
>>     ?property wdt:P1630  ?format .
>>     SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
>> }
>>
>> --
>> Daniel Kinzler
>> Principal Platform Engineer
>>
>> Wikimedia Deutschland
>> Gesellschaft zur Förderung Freien Wissens e.V.
>>
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