Deleted portal subpages where the base page exists

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

All portal subpages that have at least one deleted revision, where the base portal page exists.

For [[Wikipedia talk:WikiProject Portals#Identifying old-style portals]] circa 11 April 2019.

SQL

SELECT DISTINCT
    CONCAT('[[Portal:', p.page_title, ']]') AS 'Existing base page',
    p.page_is_redirect,
    CONCAT('[[Portal:', ar_title, ']]') AS 'Deleted subpage',
    CASE WHEN EXISTS (SELECT 1 FROM page p2
                      WHERE p2.page_namespace = 100
                          AND p2.page_title = ar_title)
         THEN 'Y'
         ELSE 'N'
    END AS 'Deleted subpage exists'
FROM archive
JOIN page p
    ON p.page_namespace = 100 -- Portal:
    AND p.page_title = REGEXP_REPLACE(ar_title, '/.*', '')
WHERE ar_namespace = 100
    AND ar_title LIKE '%/%';

By running queries you agree to the Cloud Services Terms of Use and you irrevocably agree to release your SQL under CC0 License.

Submit Query Stop Query

All SQL code is licensed under CC0 License.

SQL

Checking query status...