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#Preliminary approach: return user edit counts, a field already tracked by wikis. #caveats: not accurate, for details refer to Manual:user table, user_editcount #time complexity: slow for large wikis/more users #includes bots SELECT user_id, user_name, user_editcount FROM user WHERE user_name NOT ILIKE '%bot%' ORDER BY user_editcount DESC LIMIT 10 #Inner join / Extracting all revisions made by all users that have made a revision in this wiki #SELECT actor.actor_name, COUNT(revision.rev_actor) AS Edits #FROM actor #INNER JOIN revision ON actor.actor_id = revision.rev_actor #GROUP BY actor.actor_name #ORDER BY Edits DESC #LIMIT 10 #Interestingly, the two approaches above result in slightly different rankings #Some user edit counts are undercounted and some are overcounted in the first approach #Since it doesn't involve a join, first approach is faster
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