English Wikipedia broken redirects

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

SQL

USE enwiki_p;
SELECT CONCAT('[[',page_title,']]') AS page_title, CONCAT('[[',rd_title,']]') AS rd_title
FROM page
JOIN redirect
ON rd_from = page_id
AND NOT EXISTS (SELECT * FROM page AS p1 WHERE p1.page_title = rd_title AND p1.page_namespace = rd_namespace)
AND page_namespace = 0
AND rd_namespace = 0

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