डेल के के जवाब में सुधार करते हुए, मेरा सुझाव है कि आप एक टैली टेबल या फ़ंक्शन का उपयोग करें, क्योंकि यह आमतौर पर अधिक प्रदर्शनकारी होता है।
मैंने नीचे इट्ज़िक बेन-गण के प्रसिद्ध एक का उपयोग किया है:
DECLARE @StartDate date = '2020-11-01', @EndDate date = '2021-02-22';
WITH
L0 AS ( SELECT 1 AS c
FROM (VALUES(1),(1),(1),(1),(1),(1),(1),(1),
(1),(1),(1),(1),(1),(1),(1),(1)) AS D(c) ),
L1 AS ( SELECT 1 AS c FROM L0 AS A CROSS JOIN L0 AS B ),
L2 AS ( SELECT 1 AS c FROM L1 AS A CROSS JOIN L1 AS B ),
Nums AS ( SELECT ROW_NUMBER() OVER(ORDER BY (SELECT NULL)) AS rownum
FROM L2 )
Date_Range_T (d_range) AS (
SELECT TOP(DATEDIFF(day, @StartDate, @EndDate) + 1)
DATEADD(day, rownum - 1, @StartDate) AS d_range,
DATEADD(day, rownum, @StartDate) AS d_rangeNext
FROM Nums
)
SELECT d_range, COUNT(Id) AS Total
FROM Date_Range_T
LEFT JOIN tbl_Support_Requests R
ON R.CreatedDate >= T.d_range AND R.CreatedDate < T.d_rangeNext
GROUP BY d_range
ORDER BY d_range ASC