2020 Olympics redirects w/o 2021 redirects

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

Redirects in the main namespace with titles containing any of "2020 Olympics", "2020 Summer Olympics", "2020 Paralympics", "2020 Summer Paralympics", or "Tokyo 2020" (case insensitive); where there isn't another redirect pointing at the same target, with the same title as the first redirect except "2021" instead of "2020".

For [[WP:VPT#Missing "2021 Olympics" redirects]] circa 25 Jul 2021.

SQL

SELECT page_title
FROM page AS p1
LEFT JOIN redirect r1 ON r1.rd_from = p1.page_id
WHERE p1.page_namespace = 0
  AND p1.page_title RLIKE '(?i)(2020_(Summer_)?(O|Para)lympics|Tokyo_2020)'
  AND p1.page_is_redirect = 1
  AND NOT EXISTS (SELECT 1 FROM redirect AS r2
                  LEFT JOIN page AS p2 ON p2.page_id = rd_from
                  WHERE r2.rd_namespace = r1.rd_namespace
                    AND r2.rd_title = r1.rd_title
                    AND p2.page_namespace = 0
                    AND p2.page_namespace = REPLACE(p1.page_title, '2020', '2021'));

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...