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Q&A for professional and enthusiast programmers

SELECT DisplayName 
FROM Users JOIN (
SELECT OwnerUserId 
FROM Posts JOIN (
SELECT '2010' y) b1 ON YEAR(CreationDate) = y
EXCEPT
SELECT OwnerUserId 
FROM Posts JOIN (
SELECT '2015' y) b2 ON YEAR(CreationDate) = y) a ON Users.Id = a.OwnerUserId;

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edited oct 24 23 jon.doe42936

created oct 13 23 anonymous