SQL
x
USE plwiki_p;
-- describe revision;
-- przegląd opisów (czy używają wszyscy #?)
-- -> tak, używają :)
select comment_text, actor_name, count(*)
from revision r
left join comment c ON rev_comment_id= comment_id
left join actor a ON rev_actor = actor_id
where
-- po starcie akcji
rev_id > 61563306
and
comment_text like '%barier%'
group by comment_text, actor_name
order by rev_actor
/**/
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