Currently, the SPARQL filter is limited to pages that have a language link defined in Wikidata. However, incubator wikis do not have language links. For this purpose, there is an external SPARQL endpoint at https://sparqlbridge.toolforge.org/ that exposes incubator article and Wikidata item links as RDF.
To make it usable, the SPARQL filter needs a new mode where the user can directly define a SPARQL query that fetches the URI list of target pages instead of items, along with an option to define a custom SPARQL endpoint. This would also resolve some speed issues on multiwiki competitions and large SPARQL queries, as it would reduce the number of queries needed and allow further SPARQL optimization.
Currently, the SPARQL filter is limited to pages that have a language link defined in Wikidata. However, incubator wikis do not have language links. For this purpose, there is an external SPARQL endpoint at https://sparqlbridge.toolforge.org/ that exposes incubator article and Wikidata item links as RDF.
To make it usable, the SPARQL filter needs a new mode where the user can directly define a SPARQL query that fetches the URI list of target pages instead of items, along with an option to define a custom SPARQL endpoint. This would also resolve some speed issues on multiwiki competitions and large SPARQL queries, as it would reduce the number of queries needed and allow further SPARQL optimization.