UkWikiMarathon2017

SQL

USE ukwiki_p;
SET SESSION group_concat_max_len = 10000;

SELECT  @rownum := @rownum + 1 AS rank,
  IFNULL(user_name, 'Всього'),
  created,
  total_len,
  articles
FROM
  (
    SELECT
      CONCAT('[[Користувач:', rev_user_text, '|', ']]') as user_name,
      COUNT(1) AS created,
    	SUM(article.page_len) as total_len,
		GROUP_CONCAT(
          DISTINCT 
		 --  [[Назва статті]]
          CONCAT('[[', 
                     REPLACE(article.page_title, '_', ' '), -- замінюємо у назві '_' на ' '
                 ']]', ' (', article.page_len, ')')
          -- список впорядкований за назвою статті
          ORDER BY article.page_len DESC  
          -- розділений пробілом
          SEPARATOR ' · '
        ) AS articles    
    FROM page article
      JOIN revision
        ON rev_page = article.page_id AND
           rev_parent_id = 0    AND
    		20170128 * 1000000 <= rev_timestamp  AND 
    		rev_timestamp < 20170131 * 1000000
    WHERE
      article.page_namespace = 0 AND
      article.page_is_redirect = 0
    GROUP BY rev_user_text WITH ROLLUP) t,
  (SELECT @rownum := -1) r
ORDER BY created DESC, total_len DESC
SQL

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