New articles per year

This query is marked as a draft This query has been published by Whym.

Derived from http://quarry.wmflabs.org/query/4386

SQL

USE jawikibooks_p;
SELECT LEFT(first_timestamp, 4) AS year, COUNT(*) FROM
(SELECT page_id, MIN(rev_timestamp) AS first_timestamp FROM page 
INNER JOIN revision ON rev_page = page_id
WHERE page_namespace = 0 AND
      page_is_redirect = 0
GROUP BY 1) AS page_creations
GROUP BY 1;

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SQL

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