Question

Possible Duplicate:
generate days from date range

Here is my query:

SELECT SUM(number) AS number, c_date 
    FROM my_table 
    WHERE c_date between '11/6/2012' AND '11/12/2012' 
    GROUP BY c_date 
    ORDER BY c_date DESC

It will return something like this

11    '11/12/2012'
9     '11/9/2012'
10    '11/8/2012'
10    '11/7/2012'
10    '11/6/2012'

Now how can I force the return results to include 11/11 and 11/10 with 0 for the number rather than skipping over them entirely. Also I cannot create a date table to store the dates.

Answer 1

Since you can’t create a new table, an alternate approach is to build up a “calendar” CTE.

Next, perform a LEFT JOIN from your newly created “calendar” table to my_table:

SELECT ISNULL(SUM(mt.number), 0) AS number, mc.c_date 
FROM 
    my_calendar mc LEFT JOIN
    my_table mt ON mt.c_date = mc.c_date
WHERE mc.c_date between '11/6/2012' AND '11/12/2012' 
GROUP BY mc.c_date 
ORDER BY mc.c_date DESC