Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
SELECT DATEPART(weekday, p.CreationDate) FROM Users u JOIN Posts p ON p.OwnerUserId = u.Id WHERE p.CreationDate > DATEADD(day, -364, GETUTCDATE()) AND ABS(DATEDIFF(day, u.CreationDate, p.CreationDate)) < 7 GROUP BY DATEPART(weekday, p.CreationDate)