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 user_name, user_registration
FROM user
INNER JOIN(
	SELECT actor
  	ON actor.actor_user = user.user_id)
INNER JOIN(
	SELECT revision
  	ON revision.rev_actor = actor.actor_id)
WHERE user_registration BETWEEN "20140501000000" and "20140630235959"
LIMIT 10

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SQL

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