How to extend the query to add 0 in the cell when no activity is performed

Question

I have the following query, it is working fine to show the cricket time played per day. All I need is to show 0 when no cricket is played. At the moment it is skipping those

Answer 1

This is a long query but should give you what you need.. It will also work for multiple activities.

;
    WITH    CTE
            AS ( SELECT   email ,
                        last_update ,
                        activity ,
                        starttime ,
                        endtime ,
                        duration AS [Totaltime]
                FROM     users
                WHERE    activity = 'cricket'
                        AND email = 'abc'
                GROUP BY email ,
                        activity ,
                        duration ,
                        starttime ,
                        endtime ,
                        last_update
                ),
        cteSummary
            AS ( SELECT   activity ,
                        CAST(starttime AS DATE) AS date ,
                        SUM(DATEDIFF(second, starttime, endtime)) / 60.0 AS TimePerDay
                FROM     cte
                WHERE    starttime >= DATEADD(day, -15, last_update)
                GROUP BY activity ,
                        CAST(starttime AS DATE)
                ),
        cteDateRange
            AS ( SELECT   activity ,
                        MIN(date) AS MinDate ,
                        MAX(date) AS MaxDate
                FROM     cteSummary
                GROUP BY activity
                ),
        cteDateRecur
            AS ( SELECT   activity ,
                        CalDate = CONVERT(DATE, MinDate) ,
                        MaxDate
                FROM     cteDateRange
                UNION ALL
                SELECT   activity ,
                        CalDate = DATEADD(DAY, 1, c.CalDate) ,
                       MaxDate
                FROM     cteDateRecur c
                WHERE    c.CalDate < c.MaxDate
                )
    SELECT  d.activity ,
            d.CalDate AS date ,
            ISNULL(s.TimePerDay, 0) AS TimePerDay
    FROM    cteDateRecur d
            LEFT JOIN cteSummary s ON d.CalDate = s.date
    OPTION  ( MAXRECURSION 0 )