SQL Count to include zero values

Question

I have created the following stored procedure that is used to count the number of records per day between a specific range for a selected location:

[dbo].[ge         


        

Answer 1

I just recently has a similar task and used this as a backdrop to my work. However, as explained by robwilliams I too, couldn't get it KeithS solution to work. Mine task was slightly different I was doing it by hours vs days but I think the solution to the neilrudds question would be

DECLARE @Start as DATETIME
       ,@End as DATETIME
       ,@LOCATION AS INT;


WITH CTE_Dates AS
(
    SELECT @Start AS cte_date, 0 as 'counted_leads'
    UNION ALL
    SELECT DATEADD(DAY, 1, cte_date) as cte_date, 0 AS 'counted_leads'
    FROM CTE_Dates  
    WHERE DATEADD(DAY, 1, cte_date) <= @End
)
SELECT cte_date AS 'TIME_STAMP'
      ,COUNT(HL.ID_Location) AS 'counted_leads'
FROM CTE_Dates 
LEFT JOIN HL_Logs AS HL ON CAST(HL.Time_Stamp as date) = CAST(cte_date as date)
AND DATEPART(day, HL.Time_Stamp) = DATEPART(day,cte_date)
AND HL.ID_Location = @LOCATION
group by cte_date
OPTION (MAXRECURSION 0)