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Q&A about the site for administrators, end users, developers and designers for Craft CMS

--find number of users who didn’t post any questions in year2015--
SELECT COUNT(DISTINCT u.Id)
FROM Users u
LEFT JOIN Posts p ON u.Id = p.OwnerUserId AND YEAR(p.CreationDate) = 2015 AND p.PostTypeId = (SELECT Id FROM PostTypes WHERE Name = 'Question')
WHERE p.Id IS NULL;

fork query

edited mar 27

created mar 27 anonymous