SQL
AخA
SELECT
YEAR(rev_timestamp) AS year,
COUNT(DISTINCT actor_name) AS unique_editors
FROM
revision
JOIN
page ON revision.rev_page = page.page_id
JOIN
actor ON revision.rev_actor = actor.actor_id
WHERE
page.page_title = 'Reliable_sources/Noticeboard'
AND page.page_namespace = 4
GROUP BY
YEAR(rev_timestamp)
ORDER BY
year;
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