On 22/12/2018 15:59, Bob DuCharme wrote:
I see INCLUDE used as a keyword in some Wikidata queries, like in the
WHERE clause of
https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples#Metabolite-metabolite_interactions_(mostly_conversions)_and_their_pKa_change,
but I can't find any documentation of this syntax extension. Can someone
point me to some writeup of this?
Thanks,
Bob
It's a Blazegraph (and ANZO) extension, called a Named Subquery:
https://wiki.blazegraph.com/wiki/index.php/NamedSubquery
Very useful if the same bit of data is needed in different contexts; can
make some queries simpler to read and help the optimiser to do more
sensible things.
Best regards,
James.
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