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Wikibase
Replicas browser and optimizer
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This query is marked as a draft
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Teslaton
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*** May require further optimization for huge wikis (e.g. EN as source wiki). Additional condition on temporary dataset (before sort and limit) would be helpful, maybe limit via minimal number of langlinks for page to be considered.
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SQL
USE skwiki_p; SELECT CONCAT("Kategória:",page_title), pp_value, page_id FROM page LEFT JOIN langlinks ON ll_from = page_id LEFT JOIN (SELECT * FROM page_props WHERE pp_propname = 'wikibase_item') AS props ON pp_page = page_id WHERE ll_title IS NULL AND page_namespace = 14 ORDER BY page_title;
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