Getting daily counts for events that don't happen every day

Question

I have a customer table in which a new row is inserted when a customer signup occurs.

Problem

I want to know the total numb

Answer 1

DECLARE @MinDate DATE = '2015-07-01',
        @MaxDate DATE = '2015-07-10';

Create Table tblTempDates 
(created date, signup int)

insert into tblTempDates
SELECT  TOP (DATEDIFF(DAY, @MinDate, @MaxDate) + 1)
        Date = DATEADD(DAY, ROW_NUMBER() OVER(ORDER BY a.object_id) - 1, @MinDate),  0 As Signup
FROM    sys.all_objects a
        CROSS JOIN sys.all_objects b;

Create Table tblTempQueryDates
(created date, signup int)

INSERT INTO tblTempQueryDates
SELECT 
    created AS created, COUNT(scandate) AS signup
FROM
    customer
WHERE
    created BETWEEN @MinDate AND @MaxDate
GROUP BY created

UPDATE    tblTempDates
SET  tblTempDates.signup = tblTempQueryDates.signup            
FROM         tblTempDates INNER JOIN
                      tblTempQueryDates ON tblTempDates.created = tblTempQueryDates.created

select * from tblTempDates
order by created

Drop Table tblTempDates
Drop Table tblTempQueryDates

Not pretty, but it gives you what you want.