Registration year of dewiki users

Fork of Distribution of registration time for users with 5+ edits (huwiki) by Tgr

This query is marked as a draft This query has been published by Polibil.

See https://quarry.wmflabs.org/query/37312 for enwiki.
See https://quarry.wmflabs.org/query/37314 for 25+ edits.

SQL

use enwiki_p;

SELECT
	CONCAT(SUBSTR(user_registration, 1, 4)) AS registration_date,
    -- SUBSTR(user_registration, 1, 6) AS registration_date,
    count(*) AS new_users
FROM user
GROUP BY registration_date
ORDER BY registration_date
;

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