query-edfe9872e29f037f6f85530ae47641f4

rq turtle/ttl

Slightly different results after federating a queryI noticed slightly different numbers in the results between my ordinary query and my rewritten for WDGS query. What's going on (probably I did something wrong!) The query is to count the types of things that main subjects of my theses are. The original query:

Use at

PREFIX wdsubgraph: <https://query.wikidata.org/subgraph/>
PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX bd: <http://www.bigdata.com/rdf#>
#defaultView:BubbleChart
SELECT DISTINCT ?instanceLabel (count(?instanceLabel) as ?count)


WHERE {       
        {     
         SERVICE wdsubgraph:scholarly_articles {    
           ?thesis wdt:P5008 wd:Q111645234 ;
                   wdt:P921 ?mainsubject.
           }                                        
        }          
       OPTIONAL {                                            
         ?mainsubject wdt:P31 ?instance 
         BIND(?instanceLabel as ?instanceLabel)
        }                                           


  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}                                                  
GROUP BY ?instanceLabel
ORDER BY DESC(?count)

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v6("?count") v4("?instance") v5("?instanceLabel"):::projected v3("?mainsubject") v2("?thesis") c3(["wd:Q111645234"]):::iri c7(["bd:serviceParam"]):::iri c9(["#91;AUTO_LANGUAGE#93;,en"]):::literal subgraph s1["https://query.wikidata.org/subgraph/scholarly_articles"] style s1 stroke-width:4px; v2 --"wdt:P5008"--> c3 v2 --"wdt:P921"--> v3 end subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v3 -."wdt:P31".-> v4 bind0[/"?instanceLabel"/] v5 --o bind0 bind0 --as--o v5 end subgraph s2["http://wikiba.se/ontology#label"] style s2 stroke-width:4px; c7 --"wikibase:language"--> c9 end bind2[/"count(?instanceLabel)"/] v5 --o bind2 bind2 --as--o v6