Edit count for user grouped by category

This query is marked as a draft This query has been published by BDavis (WMF).

Proof of concept query to show how many edits a given user has made in each category by joining revision on categorylinks and actor. Note that a content page can be in 0 to N categories. Edits to pages not currently in any category will appear as edits to the "" (empty string) category in this report.

SQL

SELECT COUNT(DISTINCT rev_id) AS edit_count, cl_to AS category_name
FROM revision
JOIN actor ON actor_id = rev_actor 
LEFT OUTER JOIN categorylinks ON cl_from = rev_page
WHERE actor.actor_name = 'BryanDavis'
GROUP BY cl_to
ORDER BY edit_count DESC;

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