Q&A for professional and enthusiast programmers
WITH Spikes AS ( SELECT CONVERT(DATE, MAX(U.CreationDate), 101) AS Date ,COUNT(U.Id) AS NewCount FROM USERS U WHERE --U.CreationDate > '2021-01-01' U.AboutMe LIKE N'%[。,]%' GROUP BY CONVERT(DATE, U.CreationDate, 101) HAVING COUNT(U.Id) > ##NewProfilesOnDayThreshold:int?70## --ORDER BY DateCreated ASC ), Profiles AS ( SELECT U.CreationDate --,U.LastAccessDate -- generally the same as CreationDate ,U.Reputation AS REP ,U.Id AS [User Link] ,U.DisplayName ,U.AboutMe ,U.Views ,U.UpVotes ,DownVotes FROM Users U WHERE U.AboutMe COLLATE Latin1_General_BIN LIKE N'%[。,]%' ) SELECT * FROM Spikes JOIN Profiles ON Spikes.Date = CONVERT(DATE, Profiles.CreationDate, 101) ;