Hi,
I am getting frequent timeouts trying to use the SPARQL endpoint GUI at
https://query.wikidata.org/ .
I'll admit, I have some complex queries, bu I really feel like this is
something that the system should be able to handle or at least allow me to
request a longer timeout wait.
For example, this query:
SELECT ?item ?item2
WHERE
{
?item wdt:P625 ?location .
?item <http://www.w3.org/2002/07/owl#sameAs> ?item2 .
}
LIMIT 10
or this query:
SELECT DISTINCT ?item ?itemname ?location
WHERE {
?item wdt:P625 ?location ;
wdt:P31 ?type ;
rdfs:label ?itemname.
?type wdt:P279 ?supertype .
FILTER(
LANG(?itemname) = "en" &&
?supertype not in (wd:Q5, wd:Q4991371, wd:Q7283, wd:Q36180,
wd:Q7094076, wd:Q905511, wd:Q1063801,
wd:Q1062856, wd:Q35127, wd:Q68, wd:Q42848, wd:Q2858615,
wd:Q241317 , wd:Q1662611, wd:Q7397, wd:Q151885,
wd:Q1301371, wd:Q1068715, wd:Q7366 , wd:Q18602249, wd:Q16521,
wd:Q746549, wd:Q13485782, wd:Q36963)
)
}
LIMIT 200000
When I use python SPARQLwrapper things improve somewhat, but still timeout on
some of my queries.
I tried the first query above on an old wikidata dump we have from 2021 that we
loaded on Jena TDB and it managed to complete it (0 results, but I had to run
it to figure that out...).
Seems strange to get such poor performance.
Cheers
Tomer
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