MT-1 for CRMD - Quarry

This query is marked as a draft This query has been published by Nivas10798.

Following is an SQL query on https://quarry.wmcloud.org/ to get a list of "unique" uploaders to the Wikimedia Commons category: Images from Wiki Loves Earth 2014, who have created their Wikimedia account during the campaign period i.e. May and June 2014. The output includes user_name and their account registration_timestamp.

Note: Below query is written for a Micro Task.

SQL

SELECT DISTINCT user_name, user_registration as registration_timestamp
FROM user
JOIN actor(
	ON actor_user = user_id
  WHERE user_registration BETWEEN "20140501000000" and "20140630235959")
INNER JOIN revision
	ON rev_actor = actor_id
INNER JOIN categorylinks
	ON rev_page = cl_from
WHERE cl_to = "Images_from_Wiki_Loves_Earth_2014" and cl_type = "file"

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SQL

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