WLM-UA 2019 Photo Competition newcomers

SQL

SELECT actor_name
FROM commonswiki_p.revision r_prev
join commonswiki_p.categorylinks  on rev_page = cl_from
join actor on rev_actor = actor_id and actor_user is not null
WHERE rev_parent_id = 0
and cl_to IN (
  "Images_from_Wiki_Loves_Monuments_2019_in_Ukraine"
) and not exists (SELECT 1
FROM commonswiki_p.revision
join commonswiki_p.categorylinks on rev_page = cl_from                  
join actor on rev_actor = actor_id and actor_user is not null
WHERE rev_parent_id = 0
                  AND  rev_actor = r_prev.rev_actor
and cl_to IN (
  "Images_from_Wiki_Loves_Monuments_2012_in_Ukraine",
  "Images_from_Wiki_Loves_Monuments_2013_in_Ukraine",
  "Images_from_Wiki_Loves_Monuments_2014_in_Ukraine",
  "Images_from_Wiki_Loves_Monuments_2015_in_Ukraine",
  "Images_from_Wiki_Loves_Monuments_2016_in_Ukraine",
  "Images_from_Wiki_Loves_Monuments_2017_in_Ukraine",
  "Images_from_Wiki_Loves_Monuments_2018_in_Ukraine"
             )  
)  
 GROUP BY actor_name
SQL

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