Comparison of IP edits by removal

SQL

SELECT 			-- Add the following columns...
 COUNT(*)
-- 	  COUNT(CASE WHEN ct_tag_id = 59 THEN 1 END) as "reverted edits",
--    COUNT(CASE WHEN 1=1 THEN 1 END) as "all"
FROM revision as rev   					-- ... from all Wikipedia revisions
JOIN change_tag ON change_tag.ct_rev_id = rev.rev_id        -- Combines revision tags with the query
JOIN actor ON rev.rev_actor = actor.actor_id
WHERE -- rev.rev_deleted = 0 AND			-- non-deleted revisions
 actor.actor_user IS NULL		-- IP revisions
 -- AND change_tag.ct_tag_id = 59
 AND   rev_timestamp > DATE_FORMAT(DATE_ADD(NOW(), INTERVAL -2 YEAR), "%Y%m%d%H%i%s") -- minus 2 year
 AND   rev_timestamp < DATE_FORMAT(DATE_ADD(NOW(), INTERVAL -1 MONTH), "%Y%m%d%H%i%s") -- minus 1 MONTH

-- LIMIT 10
SQL

Checking query status...
