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Êîëîíêó ñ íàèìåíîâàíèåì ãðóïï íàçîâèòå group_age, à êîëîíêó ñ ÷èñëîì ïîëüçîâàòåëåé — users_count. --Îòñîðòèðóéòå ïîëó÷åííóþ òàáëèöó ïî êîëîíêå ñ íàèì ...
no matter the time period in the data. This is done with some simple calculations and a GROUP BY clause in the SQL statement. To calculate and use a numeric zoom factor, a unix timestamp is kept along ...