Admins : date d'inscription

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

SQL

SELECT
  DATE_FORMAT(STR_TO_DATE(SUBSTRING(user_registration, 1, 8), '%Y%m%d'), '%Y') AS 'Année d\'inscription',
  COUNT(*) AS 'Nombre d\'administrateurs'
FROM `user`
WHERE user_registration >= '2000-01-01'
  AND user_name IN (
    SELECT user_name
    FROM user_groups
    WHERE ug_group = 'sysop'
  )
GROUP BY YEAR(STR_TO_DATE(SUBSTRING(user_registration, 1, 8), '%Y%m%d'))
ORDER BY YEAR(STR_TO_DATE(SUBSTRING(user_registration, 1, 8), '%Y%m%d'));

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