select rc_id, rc_timestamp, -- rc_user, rc_user_text

    , rc_namespace, rc_title

    , abs(rc_old_len - rc_new_len) size, c.comment_text

from eswiki_p.recentchanges rc

inner join comment c on rc.rc_comment_id = c.comment_id

inner join actor a on rc.rc_actor_id = a.actor_id

where rc_id > 0 and

    rc_namespace in (0, 104) and 

    lower(comment_text) like '%#WikimediaParaLaMemoria%' and

    /*rc_timestamp between 20170601000000 and 20170631000000 and*/

    -- rc_user > 5 and 

    rc_new = 0;