Query Run
USE huwiki_p; SELECT LEFT(user_registration, 6) AS month, ... 5 years ago
USE huwiki_p; SELECT LEFT(user_registration, 6) AS month, ... 5 years ago
USE huwiki_p; SELECT LEFT(user_registration, 6) AS month, ... 7 years ago
USE enwiki_p; SELECT LEFT(user_registration, 6) AS month, ... 7 years ago