Pickled accounts report

SQL

use fawiki_p;
SELECT
  rev_user_text,
  STR_TO_DATE(LEFT(min(rev_timestamp), 8), '%Y%m%d') AS sunrise,
  STR_TO_DATE(LEFT(min(sunset), 8), '%Y%m%d') AS sunset,
  old_edits,
  COUNT(rev_id) AS recent_edits,
  GROUP_CONCAT(DISTINCT(ug_group) SEPARATOR ' ') AS groups
FROM revision
JOIN (
  SELECT
    rev_user old_user,
    max(rev_timestamp) sunset,
    COUNT(rev_id) AS old_edits
  FROM revision
  WHERE
    rev_user <> 0
    AND rev_timestamp < CONCAT(
      YEAR(CURDATE()) - 3,
      LPAD(MONTH(CURDATE()) , 2, 0),
      '01000000'
    )
  GROUP BY rev_user
) old
  ON old_user = rev_user
LEFT JOIN user_groups
  ON rev_user = ug_user
WHERE
  rev_user <> 0
  AND rev_timestamp > CONCAT(
    YEAR(CURDATE()),
    LPAD(MONTH(CURDATE()) , 2, 0),
    '01000000'
  )
  AND rev_user NOT IN (
    SELECT rev_user
    FROM revision
    WHERE
      rev_user <> 0
      AND rev_timestamp < CONCAT(
        YEAR(CURDATE()),
        LPAD(MONTH(CURDATE()) , 2, 0),
        '01000000')
      AND rev_timestamp > CONCAT(
        YEAR(CURDATE()) - 3,
        LPAD(MONTH(CURDATE()) , 2, 0),
        '01000000'
      )
)
GROUP BY rev_user_text
SQL

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