Editors of a page of a specific age

SQL

-- Use underscores instead of spaces
SET @PAGE = "Dog";
SET @NAMESPACE = 0;
SET @MAXAGE = INTERVAL 6 MONTH;

SELECT
	`actor_name` as `Username`,
    `user_editcount` as `Edits`,
    COUNT(`actor_name`) as `Edits on page`,
    DATE_FORMAT(`user_registration`, "%Y-%m-%d %H:%i:%s") as `Registration date`,
    IF(ipb_sitewide = 1, "Y", NULL) as `Currently blocked`
FROM revision_userindex
JOIN actor_revision ON rev_actor = actor_id
JOIN `user` ON actor_user = user_id
LEFT JOIN ipblocks ON user_id = ipb_user
WHERE
	user_registration < DATE_FORMAT(CURDATE() - @MAXAGE, "%Y%m%d%H%i%s")
    AND rev_page = (SELECT page_id FROM page WHERE page_title = @PAGE AND page_namespace = @NAMESPACE)
GROUP BY actor_name
ORDER BY `Edits` DESC
SQL

Checking query status...
