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| ```sparql {data-demo-engine="wikidata"} | ||
| PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> | ||
| PREFIX wd: <http://www.wikidata.org/entity/> | ||
| PREFIX wdt: <http://www.wikidata.org/prop/direct/> | ||
| PREFIX ql: <http://qlever.cs.uni-freiburg.de/builtin-functions/> | ||
| SELECT ?astronaut ?astronaut_name (COUNT(?text) AS ?count) (SAMPLE(?text) AS ?example_text) WHERE { | ||
| ?astronaut wdt:P106 wd:Q11631 . | ||
| ?astronaut rdfs:label ?astronaut_name . | ||
| FILTER (LANG(?astronaut_name) = "en") | ||
| ?text ql:contains-entity ?astronaut . | ||
| ?text ql:contains-word "moon walk*" . | ||
| } | ||
| GROUP BY ?astronaut ?astronaut_name | ||
| ORDER BY DESC(?count) | ||
| ``` |
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The query is empty when run. Is it possible, that Wikidata is built without the text index?
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Yes the currently live wikidata instance is missing its text index.
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Ok. It seemed strange that the demo query has no results.
Qup42
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Jan 9, 2026
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Looks good from the markdown side.
Reason: `geof:envelope` currently creates a new entry in the local vocabulary, and materialized views with entries from the local vocabulary are not yet supported.
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Move old documentation from
docs/folder in the main qlever repo and update it on the way.Corresponding change in main repo: ad-freiburg/qlever#2631