Query Run
select user_name from user where user_name like '%a%' LIMIT 100 7 years ago
select user_name from user where user_name like '%a%' LIMIT 100 7 years ago
use enwiki_p; select user_name from user where '%a%' LIMIT 100 7 years ago
select user_real_name from user where '%a%' LIMIT 100 7 years ago
select user_real_name from user LIMIT 100 7 years ago