Attempt at finding redirects mainspace --> special mk II

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

SELECT
    r.page_title AS redirect_title,
    t.page_title AS target_title
FROM
    page r
JOIN
    redirect rd ON r.page_id = rd.rd_from
JOIN
    page t ON rd.rd_title = t.page_title AND rd.rd_namespace = t.page_namespace
WHERE
    r.page_namespace = 0  -- Source page is in main namespace
    AND t.page_namespace = 4; -- Target page is in the special namespace

SQL

SELECT p1.page_id, p1.page_title, p2.page_namespace, p2.page_title AS target_title
FROM page p1
JOIN redirect ON p1.page_id = rd_from
JOIN page p2 ON p2.page_id = rd_title
WHERE p1.page_namespace = 0
  AND p2.page_namespace = -1;  -- Special namespace is usually indicated by -1

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