enwiki usernames containing banned characters

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

SQL

SELECT user_name, REGEXP_REPLACE(user_name, "[^%/@:=]", "") AS forbidden_characters
FROM user
WHERE (
  user_name LIKE "%\%%"
  OR user_name LIKE "%/%"
  OR user_name LIKE "%@%"
  OR user_name LIKE "%:%"
  OR user_name LIKE "%=%"
);
SELECT COUNT(forbidden_characters), forbidden_characters
ORDER BY 1 DESC

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