Duplicate Wikipedia files

This query is marked as a draft This query has been published by Stefan2.

These should normally be tagged with {{db-f1}}.

SQL

USE enwiki_p;
#USE commonswiki_p; - this is too slow...
SELECT DISTINCT a.img_name
FROM image a
INNER JOIN image b ON a.img_sha1 = b.img_sha1 AND a.img_name != b.img_name
INNER JOIN page p ON p.page_title = a.img_name AND p.page_namespace = 6
LEFT JOIN page_restrictions r ON r.pr_page = p.page_id
WHERE r.pr_page IS NULL

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