Unique registered users that edited ptwiki per day

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

Note that this query use rechentchanges table, where the oldest and newest days are incomplete.

SQL

USE ptwiki_p;
SELECT
 DAY,
 COUNT(*) TOTAL_USERS,
 SUM(user_registration IS NULL OR user_registration < SUBDATE(DAY * 1000000, 365)) USERS_REG_MORE_THAN_1_YEAR_BEFORE,
 SUM(user_registration > SUBDATE(DAY * 1000000, 30)) USERS_REG_LESS_THAN_30_DAYS_BEFORE
 FROM (SELECT DISTINCT
  SUBSTR(rc_timestamp, 1, 8) DAY,
  actor_user
  FROM recentchanges
  INNER JOIN actor ON rc_actor = actor_id
  WHERE rc_type IN (0, 1) AND actor_user IS NOT NULL
 ) x
 INNER JOIN user ON actor_user = user_id
 GROUP BY DAY;

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