- Quarry

SQL

select ROW_NUMBER() over(order by page_title) num,
       case when page_namespace = 2 then CONCAT('simple.wikipedia.org/wiki/User:', replace(page_title, '_', ' '), '_') else -- Format as wikilink, check whether it is in User namespace
            CONCAT('[[User talk:', replace(page_title, '_', ' '), ']]') end as 'U2 worthy pages', -- Format as wikilink, check whether it is in User talk namespace
       page_len as 'Page length',
       DATE_FORMAT(rev_timestamp, '%Y-%m-%d %H:%i:%s') as 'Creation date',
       actor_name as 'Page creator'
from revision -- Use revision table
join (select -- join with page table
      page_namespace,
      page_id,
      page_title,
      page_len
      from page
      left join `user` -- join with user table, use ` to escape user keyword
      on user_name = replace(SUBSTRING_INDEX(page_title, '/', 1), '_', ' ') -- replace underscore with space
      where page_namespace in (2, 3) -- filter User and User talk namespaces
      and page_is_redirect = 0 -- exclude redirects
      -- AND page_title NOT RLIKE '(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)'
      and page_title not regexp '([0-9A-E][0-9A-E][0-9A-E]:[0-9A-E].|[1-9].|[1-9]{2}.|[1-9]{3}.)' -- exclude titles matching IP addresses
      and ISNULL(user_name)) as pgtmp -- Base pagename is a non existent username
 on pgtmp.page_id = rev_page -- join on page_id
 and rev_timestamp = (select -- filter the earliest timestamp from page history
                      MIN(rev_timestamp)
                      from revision
                      where rev_page = pgtmp.page_id)
join actor on rev_actor = actor_id -- join with actor table to get page creator's name
order by page_title asc; -- arrange in ascending order
SQL

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