nlwiki User pages without a user account

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

(anonymous users and redirects excluded)

Note that the table `user` doesn't seem to contain entries for users with zero visible edits (and neither does `actor`).

SQL

USE nlwiki_p;
SELECT COUNT(*) FROM `user` group by user_name;
/*SELECT page_namespace, page_title, page_is_redirect
FROM `page`
WHERE 
	page_is_redirect=0 AND
	page_namespace IN (2, 3) AND
    page_title NOT REGEXP '([1-9][0-9\.]+[0-9]|[1-9A-F][0-9A-F:]+[0-9A-F])(/[0-9]+)?' AND
    NOT EXISTS (SELECT * FROM `user` WHERE
                user_name=REPLACE(page_title,'_',' ') OR 
    			user_name=REGEXP_REPLACE(REPLACE(page_title,'_',' '), '_*!!!/.*$', '')
               )*/

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