query-730cfb127115ef01764868549bc71af7

rq turtle/ttl

Forges by publication date

Use at

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#>
# Collaborative software by creation date
# Author: [[User:Valerio Bozzolan]] and contributors
# Date: 2024
# License: CC 0, public domain
# https://www.wikidata.org/wiki/User:Valerio_Bozzolan
#defaultView:Timeline
SELECT
  ?item
  ?itemLabel
  ((SAMPLE(?image)) AS ?image) # Expose whatever logo. Just one.
  ((MIN(?pub_date)) AS ?date)  # Minimum date. (between publication date and inception).
WHERE 
{
  # Item MUST be a "forge" or any subclass of it
  ?item wdt:P31/wdt:P279* wd:Q3077240.

  # Item MUST have a publication date or inception date.
  ?item wdt:P577|wdt:P571 ?pub_date.

  # Item MAY have a lovely logo.
  OPTIONAL {
    ?item wdt:P154 ?image.  
  }

  # English label
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}

# Group by item
GROUP BY ?item ?itemLabel

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v4("?date") v4("?image"):::projected v1("?item"):::projected v2("?pub_date"):::projected a1((" ")) c8(["bd:serviceParam"]):::iri c10(["#91;AUTO_LANGUAGE#93;,en"]):::literal c3(["wd:Q3077240"]):::iri v1 --"wdt:P31"--> a1 a1 --"wdt:P279"--> c3 subgraph union0[" Union "] subgraph union0l[" "] style union0l fill:#abf,stroke-dasharray: 3 3; v1 --"wdt:P571"--> v2 end subgraph union0r[" "] style union0r fill:#abf,stroke-dasharray: 3 3; v1 --"wdt:P577"--> v2 end union0r <== or ==> union0l end subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v1 -."wdt:P154".-> v4 end subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c8 --"wikibase:language"--> c10 end bind2[/"sample(?image)"/] v4 --o bind2 bind2 --as--o v4 bind3[/"min(?pub_date)"/] v2 --o bind3 bind3 --as--o v4